jQuery not()

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This jQuery method is used to fetch the elements from the selected HTML elements that not fulfil the certain conditions set by the programmer.
This jQuery method is set a certain criteria and the elements they do not follow those criteria, returned by this method from the selected elements.
This method is the complementary of jQuery filter() method.

Related Topics:

jQuery first

jQuery last

jQuery not

Syntax:

$(selector).not(criteria,function(index)) ;

Parameter Description:

criteria: This parameter is used to specify a selector expression that is used to returns a jQuery object or one or more elements to be removed from a group of selected elements. It is optional. In case of more than one criterion, use comma to separate them.
function(index): This method represents a user defined function which run for each element in the set. If this function returns true then the element is removed from the list otherwise saved by this method. It is also an optional parameter.

1 index: This represents the index position of the element in the set.

Example:

In this example, we will select the all even headings of the div element.

<html>
 <head>
 <title> jQuery Example </title>
 <script type = "text/javascript"
        src="https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js">
      </script>
<style>
div{
background:pink;
padding:5px;
margin:5px;
font-size:16px;
}
h3{
padding:5px;
margin:5px;
}
button{
background:green;
padding:10px;
color:white;
border:1px solid green;
}
</style>
<script>
$(document).ready(function(){
 $("button").click(function(){
       $("div h3").not(":odd").css({"border":"3px solid green","background":"yellow"});
});
});
</script>
 </head>
 <body>

<h2> jQuery not() method Example</h2>
<div>
<h3> This is the even heading of div element </h3>
<h3> This is the odd heading of div element </h3>
<h3> This is the even heading of div element </h3>
<h3> This is the odd heading of div element </h3>
<h3> This is the even heading of div element </h3>
<h3> This is the odd heading of div element </h3>
<h3> This is the even heading of div element </h3>
<h3> This is the odd heading of div element </h3>
</div>
<button> Click Me! </button>
 </body>
</html>