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Front End Technology Articles
Page 597 of 652
How to change the background color using jQuery?
To change the background color using jQuery, use the jQuery css() property. We will change background color on mouse hover with the jQuery on() and css() method. ExampleYou can try to run the following code to learn how to change background color using jQuery:Live Demo $(document).ready(function(){ $("body").on({ mouseenter: function(){ $(this).css("background-color", "gray"); }, mouseleave: function(){ $(this).css("background-color", "red"); }, dblclick: function(){ $(this).css("background-color", "yellow"); } }); }); Double click and move the mouse pointer to change the background color.
Read MoreHow to handle HTML5 media events using jQuery?
To handle HTML5 media events using jQuery, use the click() method.ExampleYou can try to run the following code to learn how to handle HTML5 media events such as playing a song:Live Demo $(document).ready(function(){ var x = $(".myPlayer").length; // Count total audio players var z = 0; // Start at first audio player $("#play-bt").click(function(){ $(".myPlayer")[z].play(); $(".message").text("Music started"); }) $("#stop-bt").click(function(){ $(".myPlayer")[z].pause(); $(".myPlayer")[z].currentTime = 0; $(".message").text("Music Stopped"); }) }); Play music Stop music
Read MoreHow does jQuery Datepicker onchange event work?
To work with jQuery Datepicker onchange(), use the datepicker onSelect event. This will show which date we added currently and changed to.ExampleYou can try to run the following code to learn how to work jQuery Datepicker onchange:Live Demo $( function() { $(".date").datepicker({ onSelect: function(dateText) { display("Selected date: " + dateText + ", Current Selected Value= " + this.value); $(this).change(); } }).on("change", function() { display("Change event"); }); function display(msg) { $("").html(msg).appendTo(document.body); } }); Date:
Read MoreHow to pass a jQuery event as a parameter in a method?
To pass a jQuery event as a parameter in a method, use the bind() method.ExampleYou can try to run the following code to learn how to apss a jQuery event as a parameter:Live Demo $(document).ready(function(){ $("#btn1").bind("click", { key1: "value1", key2: "value2" }, myFunction); function myFunction (event) { $("#myid").text(event.data.key1); } });
Read MoreHow to disable right click using jQuery?
To disable right click on a page, use the jQuery bind() method.ExampleYou can try to run the following code to learn how to disable right click:Live Demo $(document).ready(function(){ $(document).bind("contextmenu",function(e){ return false; }); }); Right click is disabled on this page.
Read MoreHow to fire jQuery events with setTimeout?
The jQuery setTimeout() method is used to set an interval for events to fire.ExampleHere, we will set an interval of 3 seconds for an alert box to load using jQuery events:Live Demo $(document).ready(function(){ $("#button1").click(function(){ setTimeout("alert('Hello World!');", 3000); }); }); Click Click the above button and wait for 3 seconds. An alert box will generate after 3 seconds.
Read MoreIs it possible to detect when images are loaded via a jQuery event?
To detect loading of an image with jQuery, use the load() event handler.Note: The load() method deprecated in jQuery version 1.8. It was completely removed in version 3.0. To see its working, add jQuery version for CDN before 3.0.ExampleYou can try to run the following code to learn how to detect when image loads:Live Demo $(document).ready(function(){ $("img").load(function(){ alert("Image successfully loaded."); }); }); Note: The load() method deprecated in jQuery version 1.8. It was completely removed in version 3.0. To see its working, add jQuery version for CDN before 3.0.
Read MoreHow we can prioritize jQuery events?
To prioritize jQuery events, use the event.stopPropagation().ExampleYou can try to run the following code to learn how to prioritize using stopPropogation() method:Live Demo $(document).ready(function(){ var timer; function out(s) { if (timer) { clearTimeout(timer); timer = null; } $("#demo").append(s + ""); timer = setTimeout(function() { $("#demo").append("-------" + ""); timer = null; }, 100); } $(".li").find('input').click(function(e){ out('li>input'); if ($(this).parent().hasClass("stop")) { e.stopPropagation(); } }); $(".li").click(function(e){ out('li'); }); $('input').click(function(e){ out('input'); if ($(this).parent().hasClass("stop")) { e.stopPropagation(); } }); }); Demo Demo using stop propagation method
Read MoreWhich jQuery events do not bubble?
Some of the jQuery events, do not bubble such as mouseenter do not bubble. Let us see an example of such events.ExampleYou can try to run the following code to learn how to work with jQuery events, which do not bubble,Live Demo $(document).ready(function(){ $("p").mouseenter(function(){ $("p").css("background-color", "red"); }); $("p").mouseleave(function(){ $("p").css("background-color", "blue"); }); }); Demo Text - Keep the mouse pointer here.
Read MoreHow to store and reproduce jQuery events?
To store and reproduce jQuery events, use console to log.ExampleYou can try to run the following code to learn how to store and reproduce jQuery events:Live Demo $(document).ready(function(){ window.events = [] $("#track").click(function(event){ window.events.push(event) $.each(window.events, function(i, item){ console.log(i, item); }); }); }); Track
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