.serializeArray()

serializeArray ( ) Returns: Arrayversion added: 1.2

Description: Encode a set of form elements as an array of names and values.

The .serializeArray() method creates a JavaScript array of objects, ready to be encoded as a JSON string. It operates on a jQuery object representing a set of form elements. The form elements can be of several types:


<form>
  <div><input type="text" name="a" value="1" id="a"></div>
  <div><input type="text" name="b" value="2" id="b"></div>
  <div><input type="hidden" name="c" value="3" id="c"></div>
  <div>
    <textarea name="d" rows="8" cols="40">4</textarea>
  </div>
  <div><select name="e">
    <option value="5" selected="selected">5</option>
    <option value="6">6</option>
    <option value="7">7</option>
  </select></div>
  <div>
    <input type="checkbox" name="f" value="8" id="f">
  </div>
  <div>
    <input type="submit" name="g" value="Submit" id="g">
  </div>
</form>

The .serializeArray() method uses the standard W3C rules for successful controls to determine which elements it should include; in particular the element cannot be disabled and must contain a name attribute. No submit button value is serialized since the form was not submitted using a button. Data from file select elements is not serialized.

This method can act on a jQuery object that has selected individual form elements, such as <input>, <textarea>, and <select>. However, it is typically easier to select the <form> tag itself for serialization:


$( "form" ).submit(function( event ) {
  console.log( $( this ).serializeArray() );
  event.preventDefault();
});

This produces the following data structure (provided that the browser supports console.log):


[
  {
    name: "a",
    value: "1"
  },
  {
    name: "b",
    value: "2"
  },
  {
    name: "c",
    value: "3"
  },
  {
    name: "d",
    value: "4"
  },
  {
    name: "e",
    value: "5"
  }
]

Examples:

Example: Get the values from a form, iterate through them, and append them to a results display. 

<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <title>css demo</title>

  <style>

  body, select {
    font-size: 14px;
  }
  form {
    margin: 5px;
  }
  p {
    color: red;
    margin: 5px;
  }
  b {
    color: blue;
  }

  </style>

  <script src="//code.jquery.com/jquery-1.10.2.js"></script>
</head>
<body>
  

<p><b>Results:</b> <span id="results"></span></p>
<form>
  <select name="single">
    <option>Single</option>
    <option>Single2</option>
  </select>
  <select name="multiple" multiple="multiple">
    <option selected="selected">Multiple</option>
    <option>Multiple2</option>
    <option selected="selected">Multiple3</option>
  </select>
  <br>
  <input type="checkbox" name="check" value="check1" id="ch1">
  <label for="ch1">check1</label>
  <input type="checkbox" name="check" value="check2" checked="checked" id="ch2">
  <label for="ch2">check2</label>
  <input type="radio" name="radio" value="radio1" checked="checked" id="r1">
  <label for="r1">radio1</label>
  <input type="radio" name="radio" value="radio2" id="r2">
  <label for="r2">radio2</label>
</form>

<script>

  function showValues() {
    var fields = $( ":input" ).serializeArray();
    $( "#results" ).empty();
    jQuery.each( fields, function( i, field ) {
      $( "#results" ).append( field.value + " " );
    });
  }

  $( ":checkbox, :radio" ).click( showValues );
  $( "select" ).change( showValues );
  showValues();

</script>

  
</body>
</html>

Demo: