jQuery serializeArray() key value pairs

Question

I\'m having a bit of trouble serializing a form

Answer 1

To get only form inputs where has a value...

var criteria = $(this).find('input, select').filter(function () {
    return ((!!this.value) && (!!this.name));
}).serializeArray();

criteria: {name: "LastName", value: "smith"}

Answer 2

var result = { };
$.each($('form').serializeArray(), function() {
    result[this.name] = this.value;
});

// at this stage the result object will look as expected so you could use it
alert('name1 = ' + result.name1 + ', name2 = ' + result.name2);

Live demo.

Answer 3

Here is my solution which supports radio buttons and multi-select.

var data = $('#my_form').serializeArray().reduce(function (newData, item) {
    // Treat Arrays
    if (item.name.substring(item.name.length - 2) === '[]') {
        var key = item.name.substring(0, item.name.length);
        if(typeof(newData[key]) === 'undefined') {
            newData[key] = [];
        }
        newData[key].push(item.value);
    } else {
        newData[item.name] = item.value;
    }
    return newData;
}, {});

console.log(data);

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>

<form id="my_form">
  <select name="muli_select[]" multiple="multiple">
    <option value="1" selected>Value 1</option>
    <option value="2" selected>Value 2</option>
    <option value="3">Value 3 Not selected</option>
  </select>
  <br>
  <input name="my_text" type="hidden" value="Hidden Text"/>
  <input name="my_text2" type="text" value="Shown Text"/>
  <br>
  
  <input type="radio" name="gender" value="male" checked> Male<br>
  <input type="radio" name="gender" value="female"> Female
</form>

Answer 4

Give your form an id(form-id)

var jsoNform = $("#form-id").serializeObject();

jQuery.fn.serializeObject = function () {
    var formData = {};
    var formArray = this.serializeArray();
    for (var i = 0, n = formArray.length; i < n; ++i)
         formData[formArray[i].name] = formArray[i].value;
     return formData;
};