Special jQuery Events

When I thought of writing this post, I was actually confused about the title of the post but then I ended with “Some special jQuery Events“. If you know these events then they are not special for you but if you have come across them for the first time, then they are definitely special for you. So in this post, I will explain about 3 jQuery events. Which are,

  • one
  • trigger
  • toggle

one: Attach a handler to an event for the elements. The handler is executed at most once per element. In simple terms, the attached function will be called only once.

$(document).ready(function() {
    $("#btnDummy").one("click", function() {
        alert("This will be displayed only once.");

In this case, when button is clicked for the first time, then only the alert will be displayed.

trigger: Execute all handlers and behaviors attached to the matched elements for the given event type. In simple terms, you can trigger or call other event using trigger event. For example, There are 2 buttons and from Button 1 click you want to call Button 2 click event. This you can achieve using trigger event.

$(document).ready(function() {
    $("#btnDummy1").bind("click", function() {
        alert("Button 1 is clicked");
        $('#btnDummy2').trigger('<wbr>click'); }); $("#btnDummy2").bind("click", function() { alert("Button 2 is clicked"); }); });

toggle: Bind two or more handlers to the matched elements, to be executed on alternate clicks. This is like on/off switch. When you on the switch fan starts and when you off fan stops.

$(document).ready(function() {
    $('#btnDummy').toggle(<wbr>function() { alert('First handler for .toggle() called.'); }, function() { alert('Second handler for .toggle() called.'); }); });

Feel free to contact me for any help related to jQuery, I will gladly help you.

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