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jQuery :focus Selector
The :focus selector in jQuery is used to select the element which currently has focus.
Syntax
The syntax is as follows −
$(":focus")
Example
Let us now see an example to implement the :focus() selector −
<!DOCTYPE html> <html> <head> <style> .one { color: brown; background-color: orange; font-size: 16px; border: 2px blue solid; } </style> <script src="https://code.jquery.com/jquery-3.4.1.js"></script> <script> $(document).ready(function(){ $("input").focus(); $(":focus").addClass("one"); }); </script> </head> <h2>Fill the form</h2> <body> ID: <input type="text" name="id"><br> Rank: <input type="text" name="rank"><br> Fav. Subjects: Maths: <input type="checkbox" name="sub" value="maths"> English <input type="checkbox" name="sub" value="english"><br> <input type="submit" value="Submit"><br> </body> </html>
Output
This will produce the following output −
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