How to create autocomplete form with MaterializeCss?

Question

I am looking for autocomplete form for MaterializeCss, any plugins for this? i has try to use select2 but that\'s css not looks good

Answer 1

(function (root, factory) {

    if(typeof module === 'object' && module.exports) {
        module.exports = factory(require('jquery'));
    } else if(typeof define === 'function' && define.amd) {
        define(['jquery'], factory);
    } else {
        factory(root.jQuery);
    }

}(this, function ($) {

    var template = function (text) {
        var matcher = new RegExp('<%=([\\s\\S]+?)%>|<%([\\s\\S]+?)%>|$', 'g');

        var escapes = {
            "'": "'",
            '\\': '\\',
            '\r': 'r',
            '\n': 'n',
            '\u2028': 'u2028',
            '\u2029': 'u2029'
        };

        var escapeRegExp = /\\|'|\r|\n|\u2028|\u2029/g;

        var escapeChar = function(match) {
            return '\\' + escapes[match];
        };

        var index = 0;
        var source = "__p+='";

        text.replace(matcher, function(match, interpolate, evaluate, offset) {
            source += text.slice(index, offset).replace(escapeRegExp, escapeChar);
            index = offset + match.length;
            if (match == "<% item.value %>")
                interpolate = " item.value ";
            if (interpolate) {
                source += "'+\n((__t=(" + interpolate + "))==null?'':__t)+\n'";
            } else if (evaluate) {
                source += "';\n" + evaluate + "\n__p+='";
            }

            return match;
        });

        source += "';\n";
        source = 'with(obj||{}){\n' + source + '}\n';
        source = "var __t,__p='',__j=Array.prototype.join," +
            "print=function(){__p+=__j.call(arguments,'');};\n" +
            source + 'return __p;\n';

        var render;

        try {
            render = new Function('obj', source);
        } catch (e) {
            e.source = source;
            throw e;
        }

        var _template = function(data) {
            return render.call(this, data);
        };

        _template.source = 'function(obj){\n' + source + '}';

        return _template;
    };

    var Autocomplete = function (el, options) {
        this.options = $.extend(true, {}, Autocomplete.defaults, options);
        this.$el = $(el);
        this.$wrapper = this.$el.parent();
        this.compiled = {};
        this.$dropdown = null;
        this.$appender = null;
        this.$hidden = null;
        this.resultCache = {};
        this.value = '';
        this.initialize();
    };

    Autocomplete.defaults = {
        cacheable: true,
        limit: 10,
        multiple: {
            enable: false,
            maxSize: 4,
            onExist: function (item) {
                Materialize.toast('Tag: ' + item.text + '(' + item.id + ') is already added!', 2000);
            },
            onExceed: function (maxSize, item) {
                Materialize.toast('Can\'t add over ' + maxSize + ' tags!', 2000);
            },
            onAppend: function (item) {
                var self = this;
                self.$el.removeClass('active');
                self.$el.click();
            },
            onRemove: function (item) {
                var self = this;
                self.$el.removeClass('active');
                self.$el.click();
            }
        },
        hidden: {
            enable: true,
            el: '',
            inputName: '',
            required: false
        },
        appender: {
            el: '',
            tagName: 'ul',
            className: 'ac-appender',
            tagTemplate: '<div class="chip" data-id="<%= item.id %>" data-value="<% item.value %> data-text="<% item.text %>" "><%= item.text %>(<%= item.id %>)<i class="material-icons close">close</i></div>'
        },
        dropdown: {
            el: '',
            tagName: 'ul',
            className: 'ac-dropdown',
            itemTemplate: '<li class="ac-item" data-id="<%= item.id %>" data-value="<% item.value %>" data-text="<%= item.text %>" ><a href="javascript:void(0)"><%= item.text %></a></li>',
            noItem: ''
        },
        handlers: {
            'setValue': '.ac-dropdown .ac-item',
            '.ac-appender .ac-tag .close': 'remove'
        },
        getData: function (value, callback) {
            callback(value, []);
        },
        onSelect: function (item) { },
        onRemove: function (item) { alert('delete'); },
        ignoreCase: true,
        throttling: true,
        showListOnFocus: false,
        minLength:0
    };

    Autocomplete.prototype = {
        constructor: Autocomplete,
        initialize: function () {
            var self = this;
            var timer;
            var fetching = false;

            function getItemsHtml (list) {
                var itemsHtml = '';

                if (!list.length) {
                    return self.options.dropdown.noItem;
                }

                list.forEach(function (item, idx) {

                    if (idx >= self.options.limit) {
                        return false;
                    }

                    itemsHtml += self.compiled.item({ 'item': item});
                });

                return itemsHtml;
            }

            function handleList (value, list) {
                var itemsHtml = getItemsHtml(list);
                var currentValue = self.$el.val();

                if (self.options.ignoreCase) {
                    currentValue = currentValue.toUpperCase();
                }

                if (self.options.cacheable && !self.resultCache.hasOwnProperty(value)) {
                    self.resultCache[value] = list;
                }

                if (value !== currentValue) {
                    return false;
                }

                if(itemsHtml) {
                    self.$dropdown.html(itemsHtml);
                    self.$dropdown.show();
                } else {
                    self.$dropdown.hide();
                }

            }

            self.value = self.options.multiple.enable ? [] : '';

            self.compiled.tag = template(self.options.appender.tagTemplate);
            self.compiled.item = template(self.options.dropdown.itemTemplate);

            self.render();
            if (self.options.showListOnFocus) {
                self.$el.on('focus', function (e) {
                    if (self.options.throttling) {
                        clearTimeout(timer);
                        timer = setTimeout(function () {

                            self.options.getData('', handleList);
                        }, 200);
                        return true;
                    }

                    // self.$dropdown.show();
                });
            }

            self.$el.on('input', function (e) {
                var $t = $(this);
                var value = $t.val();

                if (!value) {
                    self.$dropdown.hide();
                    return false;
                }

                if (self.options.ignoreCase) {
                    value = value.toUpperCase();
                }

                if (self.resultCache.hasOwnProperty(value) && self.resultCache[value]) {
                    handleList(value, self.resultCache[value]);
                    return true;
                }

                if (self.options.showListOnFocus || self.options.minLength <= value.length) {
                    if (self.options.throttling) {
                        clearTimeout(timer);
                        timer = setTimeout(function () {
                            self.options.getData(value, handleList);
                        }, 200);
                        return true;
                    }

                    self.options.getData(value, handleList);
                }
            });

            self.$el.on('keydown', function (e) {
                var $t = $(this);
                var keyCode = e.keyCode;
                var $items, $hover;
                // BACKSPACE KEY
                if (keyCode == '8' && !$t.val()) {

                    if (!self.options.multiple.enable) {
                        return true;
                    }

                    if (!self.value.length) {
                        return true;
                    }

                    var lastItem = self.value[self.value.length - 1];
                    self.remove(lastItem);
                    return false;
                }
                // UP DOWN ARROW KEY
                if (keyCode == '38' || keyCode == '40') {

                    $items = self.$dropdown.find('[data-id]');

                    if (!$items.size()) {
                        return false;
                    }

                    $hover = $items.filter('.ac-hover');

                    if (!$hover.size()) {
                        $items.removeClass('ac-hover');
                        $items.eq(keyCode == '40' ? 0 : -1).addClass('ac-hover');
                    } else {
                        var index = $hover.index();
                        $items.removeClass('ac-hover');
                        $items.eq(keyCode == '40' ? (index + 1) % $items.size() : index - 1).addClass('ac-hover');
                    }

                    return false;
                }
                // ENTER KEY CODE
                if (keyCode == '13') {
                    $items = self.$dropdown.find('[data-id]');

                    if (!$items.size()) {
                        return false;
                    }

                    $hover = $items.filter('.ac-hover');

                    if (!$hover.size()) {
                        return false;
                    }

                    self.setValue({
                        id: $hover.data('id'),
                        text: $hover.data('text'),
                        value: $hover.data('value')
                    });

                    return false;
                }

            });

            self.$dropdown.on('click', '[data-id]', function (e) {
                var $t = $(this);
                var item = {
                    id: $t.data('id'),
                    text: $t.data('text'),
                    value : $t.data('value')
                };

                self.setValue(item);
            });

            self.$appender.on('click', '[data-id] .close', function (e) {
                var $t = $(this);
                var $li = $t.closest('[data-id');
                var item = {
                    id: $li.data('id'),
                    text: $li.data('text'),
                    value:$t.data('value')
                };

                self.remove(item);
            });

        },
        render: function () {
            var self = this;

            if (self.options.dropdown.el) {
                self.$dropdown = $(self.options.dropdown.el);
            } else {
                self.$dropdown = $(document.createElement(self.options.dropdown.tagName));
                self.$dropdown.insertAfter(self.$el);
            }

            self.$dropdown.addClass(self.options.dropdown.className);

            if (self.options.appender.el) {
                self.$appender = $(self.options.appender.el);
            } else {
                self.$appender = $(document.createElement(self.options.appender.tagName));
                self.$appender.insertBefore(self.$el);
            }

            if (self.options.hidden.enable) {

                if (self.options.hidden.el) {
                    self.$hidden = $(self.options.hidden.el);
                } else {
                    self.$hidden = $('<input type="hidden" class="validate" />');
                    self.$wrapper.append(self.$hidden);
                }

                if (self.options.hidden.inputName) {
                    self.$el.attr('name', self.options.hidden.inputName);
                }

                if (self.options.hidden.required) {
                    self.$hidden.attr('required', 'required');
                }

            }

            self.$appender.addClass(self.options.appender.className);

        },
        setValue: function (item) {
            var self = this;

            if (self.options.multiple.enable) {
                self.append(item);
            } else {
                self.select(item);
            }

        },
        append: function (item) {
            var self = this;
            var $tag = self.compiled.tag({ 'item': item });

            if (self.value.some(function (selectedItem) {
                    return selectedItem.id === item.id;
                })) {

                if ('function' === typeof self.options.multiple.onExist) {
                    self.options.multiple.onExist.call(this, item);
                }

                return false;
            }

            if (self.value.length >= self.options.multiple.maxSize) {

                if ('function' === typeof self.options.multiple.onExceed) {
                    self.options.multiple.onExceed.call(this, self.options.multiple.maxSize);
                }

                return false;
            }

            self.value.push(item);
            self.$appender.append($tag);

            var valueStr = self.value.map(function (selectedItem) {
                return selectedItem.id;
            }).join(',');

            if (self.options.hidden.enable) {
                self.$hidden.val(valueStr);
            }

            self.$el.val('');
            self.$el.data('value', valueStr);
            self.$dropdown.html('').hide();

            if ('function' === typeof self.options.multiple.onAppend) {
                self.options.multiple.onAppend.call(self, item);
            }

        },
        remove: function (item) {
            var self = this;

            self.$appender.find('[data-id="' + item.id + '"]').remove();
            self.value = self.value.filter(function (selectedItem) {
                return selectedItem.id !== item.id;
            });

            var valueStr = self.value.map(function (selectedItem) {
                return selectedItem.id;
            }).join(',');

            if (self.options.hidden.enable) {
                self.$hidden.val(valueStr);
                self.$el.data('value', valueStr);
            }

            self.$dropdown.html('').hide();

            if ('function' === typeof self.options.multiple.onRemove) {
                self.options.multiple.onRemove.call(self, item);
            }
            self.options.onRemove(item);
        },
        select: function (item) {
            var self = this;

            self.value = item.text;
            self.$el.val(item.text);
            self.$el.data('value', item.id);
            self.$dropdown.html('').hide();
            if (self.options.hidden.enable) {
                self.$hidden.val(item.id);
            }
            self.options.onSelect(item);
        }
    };

    $.fn.materialize_autocomplete = function (options) {
        var el = this;
        var $el = $(el).eq(0);
        var instance = $el.data('autocomplete');

        if (instance && arguments.length) {
            return instance;
        }

        var autocomplete = new Autocomplete(el, options);
        $el.data('autocomplete', autocomplete);
        $el.dropdown();
        return autocomplete;
    };

}));

down load this js and save inside your js folder jquery.materialize-autocomplete.js and u can over ride onSelect,minLength,showListOnFocus

Answer 2

According to the commit done by SuperDJ (https://goo.gl/0Mbrtg), I didn't manage to get it works...

Here is the code :

  <div class="row">
                <div class="col s12">
                    <div class="row">
                        <div class="input-field col s12">
                            <input type="text" id="autocomplete" class="autocomplete highlight-matching" data-array='[{"value": "example","path": "","class": ""},{"value": "example 2","path": "","class": ""},{"value": "test","path": "","class": ""}]'>
                            <label for="autocomplete">Autocomplete</label>
                        </div>
                    </div>
                </div>
            </div>

Here is a codepen test :

http://codepen.io/anthonyvialleton/pen/BjPjKM

Need some help to get this work.

Answer 3

Visit the link for demo https://ampersandacademy.com/demo/autocomplete/

you can easily achieve the autocomplete functionality using the Devberidge plugin.

Get Devbridge plugin using https://github.com/devbridge/jQuery-Autocomplete

 <script type="text/javascript">

$(document).ready(function() {


          $("#country").devbridgeAutocomplete({
            //lookup: countries,
            serviceUrl:"getCountry.php", //tell the script where to send requests
              type:'POST',


              //callback just to show it's working
              onSelect: function (suggestion) {
                 // $('#selection').html('You selected: ' + suggestion.value + ', ' + suggestion.data);
                },
            showNoSuggestionNotice: true,
            noSuggestionNotice: 'Sorry, no matching results',


          });

});

Here the getCountry.php file returns the JSON data. For more info visit https://ampersandacademy.com/tutorials/materialize-css/materialize-css-framework-ajax-autocomplete-example-using-php

Answer 4

As per, here.

You just need to do this simple thing (From the example there only):

HTML:

<div class="row">
    <div class="col s12">
      <div class="row">
        <div class="input-field col s12">
          <i class="material-icons prefix">textsms</i>
          <input type="text" id="autocomplete-input" class="autocomplete">
          <label for="autocomplete-input">Autocomplete</label>
        </div>
      </div>
    </div>

JS:

$('input.autocomplete').autocomplete({
    data: {
      "Apple": null,
      "Microsoft": null,
      "Google": null
   }
});

Answer 5

(function (root, factory) {

    if(typeof module === 'object' && module.exports) {
        module.exports = factory(require('jquery'));
    } else if(typeof define === 'function' && define.amd) {
        define(['jquery'], factory);
    } else {
        factory(root.jQuery);
    }

}(this, function ($) {

    var template = function (text) {
        var matcher = new RegExp('<%=([\\s\\S]+?)%>|<%([\\s\\S]+?)%>|$', 'g');

        var escapes = {
            "'": "'",
            '\\': '\\',
            '\r': 'r',
            '\n': 'n',
            '\u2028': 'u2028',
            '\u2029': 'u2029'
        };

        var escapeRegExp = /\\|'|\r|\n|\u2028|\u2029/g;

        var escapeChar = function(match) {
            return '\\' + escapes[match];
        };

        var index = 0;
        var source = "__p+='";

        text.replace(matcher, function(match, interpolate, evaluate, offset) {
            source += text.slice(index, offset).replace(escapeRegExp, escapeChar);
            index = offset + match.length;
            if (match == "<% item.value %>")
                interpolate = " item.value ";
            if (interpolate) {
                source += "'+\n((__t=(" + interpolate + "))==null?'':__t)+\n'";
            } else if (evaluate) {
                source += "';\n" + evaluate + "\n__p+='";
            }

            return match;
        });

        source += "';\n";
        source = 'with(obj||{}){\n' + source + '}\n';
        source = "var __t,__p='',__j=Array.prototype.join," +
            "print=function(){__p+=__j.call(arguments,'');};\n" +
            source + 'return __p;\n';

        var render;

        try {
            render = new Function('obj', source);
        } catch (e) {
            e.source = source;
            throw e;
        }

        var _template = function(data) {
            return render.call(this, data);
        };

        _template.source = 'function(obj){\n' + source + '}';

        return _template;
    };

    var Autocomplete = function (el, options) {
        this.options = $.extend(true, {}, Autocomplete.defaults, options);
        this.$el = $(el);
        this.$wrapper = this.$el.parent();
        this.compiled = {};
        this.$dropdown = null;
        this.$appender = null;
        this.$hidden = null;
        this.resultCache = {};
        this.value = '';
        this.initialize();
    };

    Autocomplete.defaults = {
        cacheable: true,
        limit: 10,
        multiple: {
            enable: false,
            maxSize: 4,
            onExist: function (item) {
                Materialize.toast('Tag: ' + item.text + '(' + item.id + ') is already added!', 2000);
            },
            onExceed: function (maxSize, item) {
                Materialize.toast('Can\'t add over ' + maxSize + ' tags!', 2000);
            },
            onAppend: function (item) {
                var self = this;
                self.$el.removeClass('active');
                self.$el.click();
            },
            onRemove: function (item) {
                var self = this;
                self.$el.removeClass('active');
                self.$el.click();
            }
        },
        hidden: {
            enable: true,
            el: '',
            inputName: '',
            required: false
        },
        appender: {
            el: '',
            tagName: 'ul',
            className: 'ac-appender',
            tagTemplate: '<div class="chip" data-id="<%= item.id %>" data-value="<% item.value %> data-text="<% item.text %>" "><%= item.text %>(<%= item.id %>)<i class="material-icons close">close</i></div>'
        },
        dropdown: {
            el: '',
            tagName: 'ul',
            className: 'ac-dropdown',
            itemTemplate: '<li class="ac-item" data-id="<%= item.id %>" data-value="<% item.value %>" data-text="<%= item.text %>" ><a href="javascript:void(0)"><%= item.text %></a></li>',
            noItem: ''
        },
        handlers: {
            'setValue': '.ac-dropdown .ac-item',
            '.ac-appender .ac-tag .close': 'remove'
        },
        getData: function (value, callback) {
            callback(value, []);
        },
        onSelect: function (item) { },
        onRemove: function (item) { alert('delete'); },
        ignoreCase: true,
        throttling: true,
        showListOnFocus: false,
        minLength:0
    };

    Autocomplete.prototype = {
        constructor: Autocomplete,
        initialize: function () {
            var self = this;
            var timer;
            var fetching = false;

            function getItemsHtml (list) {
                var itemsHtml = '';

                if (!list.length) {
                    return self.options.dropdown.noItem;
                }

                list.forEach(function (item, idx) {

                    if (idx >= self.options.limit) {
                        return false;
                    }

                    itemsHtml += self.compiled.item({ 'item': item});
                });

                return itemsHtml;
            }

            function handleList (value, list) {
                var itemsHtml = getItemsHtml(list);
                var currentValue = self.$el.val();

                if (self.options.ignoreCase) {
                    currentValue = currentValue.toUpperCase();
                }

                if (self.options.cacheable && !self.resultCache.hasOwnProperty(value)) {
                    self.resultCache[value] = list;
                }

                if (value !== currentValue) {
                    return false;
                }

                if(itemsHtml) {
                    self.$dropdown.html(itemsHtml);
                    self.$dropdown.show();
                } else {
                    self.$dropdown.hide();
                }

            }

            self.value = self.options.multiple.enable ? [] : '';

            self.compiled.tag = template(self.options.appender.tagTemplate);
            self.compiled.item = template(self.options.dropdown.itemTemplate);

            self.render();
            if (self.options.showListOnFocus) {
                self.$el.on('focus', function (e) {
                    if (self.options.throttling) {
                        clearTimeout(timer);
                        timer = setTimeout(function () {

                            self.options.getData('', handleList);
                        }, 200);
                        return true;
                    }

                    // self.$dropdown.show();
                });
            }

            self.$el.on('input', function (e) {
                var $t = $(this);
                var value = $t.val();

                if (!value) {
                    self.$dropdown.hide();
                    return false;
                }

                if (self.options.ignoreCase) {
                    value = value.toUpperCase();
                }

                if (self.resultCache.hasOwnProperty(value) && self.resultCache[value]) {
                    handleList(value, self.resultCache[value]);
                    return true;
                }

                if (self.options.showListOnFocus || self.options.minLength <= value.length) {
                    if (self.options.throttling) {
                        clearTimeout(timer);
                        timer = setTimeout(function () {
                            self.options.getData(value, handleList);
                        }, 200);
                        return true;
                    }

                    self.options.getData(value, handleList);
                }
            });

            self.$el.on('keydown', function (e) {
                var $t = $(this);
                var keyCode = e.keyCode;
                var $items, $hover;
                // BACKSPACE KEY
                if (keyCode == '8' && !$t.val()) {

                    if (!self.options.multiple.enable) {
                        return true;
                    }

                    if (!self.value.length) {
                        return true;
                    }

                    var lastItem = self.value[self.value.length - 1];
                    self.remove(lastItem);
                    return false;
                }
                // UP DOWN ARROW KEY
                if (keyCode == '38' || keyCode == '40') {

                    $items = self.$dropdown.find('[data-id]');

                    if (!$items.size()) {
                        return false;
                    }

                    $hover = $items.filter('.ac-hover');

                    if (!$hover.size()) {
                        $items.removeClass('ac-hover');
                        $items.eq(keyCode == '40' ? 0 : -1).addClass('ac-hover');
                    } else {
                        var index = $hover.index();
                        $items.removeClass('ac-hover');
                        $items.eq(keyCode == '40' ? (index + 1) % $items.size() : index - 1).addClass('ac-hover');
                    }

                    return false;
                }
                // ENTER KEY CODE
                if (keyCode == '13') {
                    $items = self.$dropdown.find('[data-id]');

                    if (!$items.size()) {
                        return false;
                    }

                    $hover = $items.filter('.ac-hover');

                    if (!$hover.size()) {
                        return false;
                    }

                    self.setValue({
                        id: $hover.data('id'),
                        text: $hover.data('text'),
                        value: $hover.data('value')
                    });

                    return false;
                }

            });

            self.$dropdown.on('click', '[data-id]', function (e) {
                var $t = $(this);
                var item = {
                    id: $t.data('id'),
                    text: $t.data('text'),
                    value : $t.data('value')
                };

                self.setValue(item);
            });

            self.$appender.on('click', '[data-id] .close', function (e) {
                var $t = $(this);
                var $li = $t.closest('[data-id');
                var item = {
                    id: $li.data('id'),
                    text: $li.data('text'),
                    value:$t.data('value')
                };

                self.remove(item);
            });

        },
        render: function () {
            var self = this;

            if (self.options.dropdown.el) {
                self.$dropdown = $(self.options.dropdown.el);
            } else {
                self.$dropdown = $(document.createElement(self.options.dropdown.tagName));
                self.$dropdown.insertAfter(self.$el);
            }

            self.$dropdown.addClass(self.options.dropdown.className);

            if (self.options.appender.el) {
                self.$appender = $(self.options.appender.el);
            } else {
                self.$appender = $(document.createElement(self.options.appender.tagName));
                self.$appender.insertBefore(self.$el);
            }

            if (self.options.hidden.enable) {

                if (self.options.hidden.el) {
                    self.$hidden = $(self.options.hidden.el);
                } else {
                    self.$hidden = $('<input type="hidden" class="validate" />');
                    self.$wrapper.append(self.$hidden);
                }

                if (self.options.hidden.inputName) {
                    self.$el.attr('name', self.options.hidden.inputName);
                }

                if (self.options.hidden.required) {
                    self.$hidden.attr('required', 'required');
                }

            }

            self.$appender.addClass(self.options.appender.className);

        },
        setValue: function (item) {
            var self = this;

            if (self.options.multiple.enable) {
                self.append(item);
            } else {
                self.select(item);
            }

        },
        append: function (item) {
            var self = this;
            var $tag = self.compiled.tag({ 'item': item });

            if (self.value.some(function (selectedItem) {
                    return selectedItem.id === item.id;
                })) {

                if ('function' === typeof self.options.multiple.onExist) {
                    self.options.multiple.onExist.call(this, item);
                }

                return false;
            }

            if (self.value.length >= self.options.multiple.maxSize) {

                if ('function' === typeof self.options.multiple.onExceed) {
                    self.options.multiple.onExceed.call(this, self.options.multiple.maxSize);
                }

                return false;
            }

            self.value.push(item);
            self.$appender.append($tag);

            var valueStr = self.value.map(function (selectedItem) {
                return selectedItem.id;
            }).join(',');

            if (self.options.hidden.enable) {
                self.$hidden.val(valueStr);
            }

            self.$el.val('');
            self.$el.data('value', valueStr);
            self.$dropdown.html('').hide();

            if ('function' === typeof self.options.multiple.onAppend) {
                self.options.multiple.onAppend.call(self, item);
            }

        },
        remove: function (item) {
            var self = this;

            self.$appender.find('[data-id="' + item.id + '"]').remove();
            self.value = self.value.filter(function (selectedItem) {
                return selectedItem.id !== item.id;
            });

            var valueStr = self.value.map(function (selectedItem) {
                return selectedItem.id;
            }).join(',');

            if (self.options.hidden.enable) {
                self.$hidden.val(valueStr);
                self.$el.data('value', valueStr);
            }

            self.$dropdown.html('').hide();

            if ('function' === typeof self.options.multiple.onRemove) {
                self.options.multiple.onRemove.call(self, item);
            }
            self.options.onRemove(item);
        },
        select: function (item) {
            var self = this;

            self.value = item.text;
            self.$el.val(item.text);
            self.$el.data('value', item.id);
            self.$dropdown.html('').hide();
            if (self.options.hidden.enable) {
                self.$hidden.val(item.id);
            }
            self.options.onSelect(item);
        }
    };

    $.fn.materialize_autocomplete = function (options) {
        var el = this;
        var $el = $(el).eq(0);
        var instance = $el.data('autocomplete');

        if (instance && arguments.length) {
            return instance;
        }

        var autocomplete = new Autocomplete(el, options);
        $el.data('autocomplete', autocomplete);
        $el.dropdown();
        return autocomplete;
    };

}));

You can use the above .js file and you can over ride

Onselect
 showListOnFocus: false,
            minLength:2

according to your requirement and it will work.

Answer 6

Just write the Initialisation script inside $(document).ready(function(){});

i.e.

$(document).ready(function(){
    $('input.autocomplete').autocomplete({
        data: {
            "Apple": null,
            "Microsoft": null,
            "Google": null
        }
     });
});