jQuery off()
remove handler by function
<!DOCTYPE html> <html> <head> <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.4.1/jquery.min.js"> </script>/*from w w w. j a va 2 s. c o m*/ <script> function changeSize() { $(this).animate({fontSize: "+=10px"}); } function changeSpacing() { $(this).animate({letterSpacing: "+=5px"}); } $(document).ready(function(){ $("p").on("click", changeSize); $("p").on("click", changeSpacing); $("button").click(function(){ $("p").off("click", changeSize); }); }); </script> </head> <body> <p>This is a paragraph.</p> <p>This is another paragraph.</p> <p>Click any p element to increase size and letter spacing.</p> <button>Remove the changeSize() event handler</button> </body> </html>