This extend() Method in jQuery is used to merge the contents of two or more objects together into the first object.
Syntax:
jQuery.extend( [deep ], target, object1 [, objectN ] )
Parameters: The extend() method accepts four parameter that is mentioned above and described below:
- deep: This parameter is the merge becomes recursive .
- target: This parameter is the object to extend. It will receive the new properties.
- object1: This parameter is the object containing additional properties to merge in.
- object1: This parameter is an additional objects containing properties to merge in.
Return Value: It returns the object after merging.
Below examples illustrate the use of extend() method in jQuery:
Example 1: In this example, the extend() method merge two objects in one.
<!DOCTYPE html> <html>
<head>
<meta charset="utf-8">
<title>JQuery | extend() method</title>
</script>
</head>
<body style="text-align:center;">
<h1 style="color: green">
GeeksForGeeks
</h1>
<h3>JQuery | extend() method</h3>
<p>Merge two objects in One object.</p>
<p id = "geeks"> </p>
<script>
var value1 = {
geeks1: 0,
geeks2: { topic1: 52, topic2: 100 },
geeks3: 97
};
var value2 = {
geeks2: { topic1: 200 },
geeks4: 100
};
// Merge value2 into value1
$.extend( value1, value2 );
// Assuming JSON.stringify - not available in IE<8
$( "#geeks" ).append( JSON.stringify( value1 ) );
</script>
</body>
</html>
|
Output:
Example 2: In this example, the extend() method merge two objects, without modifying any object.
<!DOCTYPE html> <html>
<head>
<meta charset="utf-8">
<title>JQuery | extend() method</title>
</head>
<body style="text-align:center;">
<h1 style="color: green">
GeeksForGeeks
</h1>
<h3>JQuery | extend() method</h3>
<p>Merge two objects, without modifying any object.</p>
<p id = "geeks"> </p>
<script>
var Object_1 = { bool_Val: false, num: 5, name: "shubham" };
var Object_2 = { bool_Val: true, name: "SHUBHAM" };
// Merge Object_1 and Object_2, without modifying Object_1
var Object_3 = $.extend( {}, Object_1, Object_2 );
// Assuming JSON.stringify - not available in IE<8
$( "#geeks" ).append(
"<b>Object_1 : </b>" + JSON.stringify( Object_1 ) + "<br>" );
$( "#geeks" ).append(
"<b>Object_2 : </b>" + JSON.stringify( Object_2 ) + "<br>" );
$( "#geeks" ).append(
"<b>Object_3 : </b>" + JSON.stringify( Object_3 ) + "<br>" );
</script>
</body>
</html>
|
Output: