问题
SETUP I'm using Chosen plugin (http://harvesthq.github.com/chosen/) and Cloning using relCopy script
PROBLEM I can clone rows successfully but options like "max_selected_options" are not passed to cloned rows. Please advise what am I doing wrong?
Fiddle file: http://jsfiddle.net/KjNb5/
HTML Code
<label>Select Options</label>
<select data-placeholder="You may select upto Two options" name="Opt_1" id="Opt_1" class="chosen-select" multiple tabindex="6" style="width: 280px; ">
<option value=""></option>
<optgroup label="NFC EAST">
<option>Dallas Cowboys</option>
<option>New York Giants</option>
<option>Philadelphia Eagles</option>
<option>Washington Redskins</option>
</optgroup>
<optgroup label="NFC NORTH">
<option>Chicago Bears</option>
<option>Detroit Lions</option>
<option>Green Bay Packers</option>
<option>Minnesota Vikings</option>
</optgroup>
</select>
<p><a href="#" class="copy" rel=".addMoreFiles">Add More</a></p>
JS Files
/**
* jQuery-Plugin "relCopy"
*
* @version: 1.1.0, 25.02.2010
*
* @author: Andres Vidal
* code@andresvidal.com
* http://www.andresvidal.com
*
* Instructions: Call $(selector).relCopy(options) on an element with a jQuery type selector
* defined in the attribute "rel" tag. This defines the DOM element to copy.
* @example: $('a.copy').relCopy({limit: 5}); // <a href="example.com" class="copy" rel=".phone">Copy Phone</a>
*
* @param: string excludeSelector - A jQuery selector used to exclude an element and its children
* @param: integer limit - The number of allowed copies. Default: 0 is unlimited
* @param: string append - HTML to attach at the end of each copy. Default: remove link
* @param: string copyClass - A class to attach to each copy
* @param: boolean clearInputs - Option to clear each copies text input fields or textarea
*
*/
(function($) {
$.fn.relCopy = function(options) {
var settings = jQuery.extend({
excludeSelector: ".exclude",
emptySelector: ".empty",
copyClass: "copy",
append: '',
clearInputs: true,
limit: 0 // 0 = unlimited
}, options);
settings.limit = parseInt(settings.limit);
// loop each element
this.each(function() {
// set click action
$(this).click(function(){
var rel = $(this).attr('rel'); // rel in jquery selector format
var counter = $(rel).length;
// stop limit
if (settings.limit != 0 && counter >= settings.limit){
return false;
};
var master = $(rel+":first");
var parent = $(master).parent();
var clone = $(master).clone(true).addClass(settings.copyClass+counter).append(settings.append);
//Remove Elements with excludeSelector
if (settings.excludeSelector){
$(clone).find(settings.excludeSelector).remove();
};
//Empty Elements with emptySelector
if (settings.emptySelector){
$(clone).find(settings.emptySelector).empty();
};
// Increment Clone IDs
if ( $(clone).attr('id') ){
var newid = $(clone).attr('id') + (counter +1);
$(clone).attr('id', newid);
};
// Increment Clone Children IDs
$(clone).find('[id]').each(function(){
var newid = $(this).attr('id') + (counter +1);
$(this).attr('id', newid);
});
//Clear Inputs/Textarea
if (settings.clearInputs){
$(clone).find(':input').each(function(){
var type = $(this).attr('type');
switch(type)
{
case "button":
break;
case "reset":
break;
case "submit":
break;
case "checkbox":
$(this).attr('checked', '');
break;
default:
$(this).val("");
}
if ($(this).hasClass('chosen-select')) {
$(this).next('.chosen-container').remove();
$(this).css({display: "inline-block"}).removeClass("chosen-done");
var that = $(this);
setTimeout(function(){ that.removeData('chosen').chosen();},0);
}
});
};
$(parent).find(rel+':last').after(clone);
return false;
}); // end click action
}); //end each loop
return this; // return to jQuery
};
})(jQuery);
$(function(){
var removeLink = ' <a class="remove" href="#" onclick="$(this).parent().slideUp(function(){ $(this).remove() }); return false">remove</a>';
$('a.copy').relCopy({append: removeLink});
});
$(document).ready(function(){
$(".chosen-select-deselect").chosen({allow_single_deselect:true});
$(".chosen-select").chosen({max_selected_options: 2});
$(".chosen-select").bind("chosen:maxselected", function () { alert("Maximum limit reached"); });
$(".chosen-select").trigger('chosen:activate');
});
回答1:
I think events are not assigned to newly cloned elements, even though "true" attribute is specified in the clone method.
Anyway, heres a quick work-around to ensure events are always attached.
New Fiddle : http://jsfiddle.net/KjNb5/4/
Old Fiddle : http://jsfiddle.net/KjNb5/1/
HTML
<div class="more-files-template hidden">
<label>Select Options</label>
<select data-placeholder="You may select upto Two options" multiple tabindex="6" style="width: 280px; ">
<option value=""></option>
<optgroup label="NFC EAST">
<option>Dallas Cowboys</option>
<option>New York Giants</option>
<option>Philadelphia Eagles</option>
<option>Washington Redskins</option>
</optgroup>
<optgroup label="NFC NORTH">
<option>Chicago Bears</option>
<option>Detroit Lions</option>
<option>Green Bay Packers</option>
<option>Minnesota Vikings</option>
</optgroup>
</select> <a class="remove" href="#">remove</a>
</div>
<form id="form" action="/" method="post">
<div class="files"></div>
</form>
<p><a href="#" class="copy-link">Add More</a>
</p>
<p><a href="#" class="form-submit-button">Submit form</a>
</p>
JS
$( main );
function main() {
var fieldNumber = 0;
var fieldNameAndID = "Opt_";
var maxFieldsAllowed = 5;
addField(fieldNumber);
$(".copy-link").on("click", function (e) {
e.preventDefault();
addField(fieldNumber);
});
$(".files").on("click", "a", function (e) {
e.preventDefault();
fieldNumber = fieldNumber - 1;
$(this)
.parent()
.slideUp(function () {
$(this).remove();
});
});
$(".form-submit-button").on("click", function (e) {
e.preventDefault();
alert($("#form").serialize());
});
function addField(index) {
fieldNumber = index + 1;
if (fieldNumber > maxFieldsAllowed) {
fieldNumber = fieldNumber - 1;
alert("Sorry! cannot add more than " + maxFieldsAllowed + " fields.");
return false;
}
var newFieldNameAndID = fieldNameAndID + fieldNumber;
var $new = $(".more-files-template")
.clone(true)
.removeClass("more-files-template hidden")
.addClass("another-field");
if (fieldNumber == 1) {
$new.find(".remove").remove();
}
$(".files").append($new);
$new.find("select")
.attr({
name: newFieldNameAndID,
id: newFieldNameAndID
})
.chosen({
max_selected_options: 2
})
.bind("chosen:maxselected", function () {
alert("Maximum limit reached");
});
}
};
CSS
.hidden {
display:none; /* to hide template */
}
This isn't prefect but will put you in right direction :)
Hope that helps.
Varinder
来源：https://stackoverflow.com/questions/20671718/chosen-plugin-options-are-not-passed-to-cloned-row