Filtering methods in jQuery include eq(), filter(), not(), etc. Let us see some of them here−
The not() method in jQuery is used to return elements that do not match specific criteria.
Let us see an example to implement the jQuery not() method−
<!DOCTYPE html> <html> <head> <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.4.1/jquery.min.js"></script> <script> $(document).ready(function(){ $("button").click(function(){ $("h2").not(".demo").css("color", "orange"); }); }); </script> <style> h2 { color: blue; } </style> </head> <body> <h2>Student Info</h2> <p>This is a demo text.</p> <h2 class="demo">Exam Info</h2> <p>This is a demo text.</p> <h2 class="demo">Teacher's Info</h2> <p>This is a demo text.</p> <button>Click me</button> </body> </html>
This will produce the following output−
Now, click the “Click me” to update the text color of the element that do not match specific criteria−
The eq() method in jQuery is used to select an element with a specific index number. The index number begins at 0.
The syntax is as follows −
$(":eq(index)")
Above, the parameter index is the index of the element.
Let us now see an example to implement the jQuery eq() method−
<!DOCTYPE html> <html> <head> <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.4.1/jquery.min.js"></script> <script> $(document).ready(function(){ $("button").click(function(){ $("p:eq(2)").css("color", "orange"); }); }); </script> </head> <body> <h2>Student Info</h2> <p>This is a demo text.</p> <h2>Exam Info</h2> <p>This is a demo text.</p> <h2>Teacher's Info</h2> <p>This is a demo text.</p> <button>Click me</button> </body> </html>
This will produce the following output−
Click “Click me” to change the heading color of a specific heading−