bind()

The jQuery bind() event is used to attach one or more event handlers for selected elements from a set of elements. It specifies a function to run when the event occurs.

It is generally used together with other events of jQuery.

Syntax:

snippet

$(selector).bind(event,data,function,map)

Parameters of jQuery bind() event

Parameter	Description
Event	It is a mandatory parameter. It specifies one or more events to attach to the elements. If you want to add multiple events they they must be separated by space.
Data	It is an optional parameter. It specifies additional data to pass along to the function.
Function	It is a mandatory parameter. It executes the function to run when the event occurs.
Map	It specifies an event map which contains one or more events or functions attached to the element.

Example of jQuery bind() event

Let's take an example to demonstrate jQuery bind() event.

snippet

<!DOCTYPE html>
<html>
<head>
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.11.2/jquery.min.js"></script>
<script>
$(document).ready(function(){
    $("p").bind("click", function(){
        alert("This paragraph was clicked.");
    });
});
</script>
</head>
<body>
<p>Click on the statement.</p>
</body>
</html>

Output:

Click on the statement.

Advantages of jQuery bind() event

It is compatible on various browsers.
It is quite easy and quick to bind event handlers.
It provides some shorthand and easy methods with click(), hover() etc. events for binding event handlers.

jQuery bind() example with mouseenter() and mouseleave() events

Let's take an example of jQuery bind() with mouseenter() and mouseleave() events.

snippet

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <title>bind demo</title>
  <style>
  p {
    background: yellow;
    font-weight: bold;
    cursor: pointer;
    padding: 5px;
  }
  p.over {
     background: #ccc;
  }
  span {
    color: red;
  }
  </style>
  <script src="https://code.jquery.com/jquery-1.10.2.js"></script>
</head>
<body>
<p>Click or double click on the statement.</p>
<span></span>
<script>
$( "p" ).bind( "click", function( event ) {
  var str = "( " + event.pageX + ", " + event.pageY + " )";
  $( "span" ).text( "This is a single click! " + str );
});
$( "p" ).bind( "dblclick", function() {
  $( "span" ).text( "This is a double click on " + this.nodeName );
});
$( "p" ).bind( "mouseenter mouseleave", function( event ) {
  $( this ).toggleClass( "over" );
});
</script>
</body>
</html>