$(document).ready(function() {jQuery.preloadImages = function(){ for(var i = 0; i<ARGUMENTS.LENGTH; jQuery(?
6. Page Style Switching
$(document).ready(function() { $("a.Styleswitcher").click(function() { //swicth the LINK REL attribute with the value in A REL attribute $('link[rel=stylesheet]').attr('href' , $(this).attr('rel')); });// how to use// place this in your header<LINK rel=stylesheet type=text/css href="default.css">// the links<A class="Styleswitcher" href="#" rel=default.css>Default Theme</A><A class="Styleswitcher" href="#" rel=red.css>Red Theme</A><A class="Styleswitcher" href="#" rel=blue.css>Blue Theme</A>});
7. The column height is the same
If two CSS columns are used, the height of the two columns can be the same.
$(document).ready(function() {function equalHeight(group) { tallest = 0; group.each(function() { thisHeight = $(this).height(); if(thisHeight > tallest) { tallest = thisHeight; } }); group.height(tallest);}// how to use$(document).ready(function() { equalHeight($(".left")); equalHeight($(".right"));});});
8. dynamically control the page font size
You can change the page font size.
$(document).ready(function() { // Reset the font size(back to default) var originalFontSize = $('html').css('font-size'); $(".resetFont").click(function(){ $('html').css('font-size', originalFontSize); }); // Increase the font size(bigger font0 $(".increaseFont").click(function(){ var currentFontSize = $('html').css('font-size'); var currentFontSizeNum = parseFloat(currentFontSize, 10); var newFontSize = currentFontSizeNum*1.2; $('html').css('font-size', newFontSize); return false; }); // Decrease the font size(smaller font) $(".decreaseFont").click(function(){ var currentFontSize = $('html').css('font-size'); var currentFontSizeNum = parseFloat(currentFontSize, 10); var newFontSize = currentFontSizeNum*0.8; $('html').css('font-size', newFontSize); return false; });});
9. Return to the top of the page
For a smooth (animated) ride back to the top (or any location ).
$(document).ready(function() {$('a[href*=#]').click(function() { if (location.pathname.replace(/^\//,'') == this.pathname.replace(/^\//,'') && location.hostname == this.hostname) { var $target = $(this.hash); $target = $target.length && $target || $('[name=' + this.hash.slice(1) +']'); if ($target.length) { var targetOffset = $target.offset().top; $('html,body') .animate({scrollTop: targetOffset}, 900); return false; } } });// how to use// place this where you want to scroll to<A name=top></A>// the link<A href="#top">go to top</A>});
11. Obtain the XY value of the mouse pointer
Want to know where your mouse cursor is?
$(document).ready(function() { $().mousemove(function(e){ //display the x and y axis values inside the div with the id XY $('#XY').html("X Axis : " + e.pageX + " | Y Axis " + e.pageY); });// how to use<DIV id=XY></DIV> });
12. verify whether the element is null
This will allow you to check if an element is empty.
$(document).ready(function() { if ($('#id').html()) { // do something }});
13. Replace Element
Want to replace a div, or something else?
$(document).ready(function() { $('#id').replaceWith('<DIV>I have been replaced</DIV> ');});
14. jQuery delayed Loading Function
Want to delay something?
$(document).ready(function() { window.setTimeout(function() { // do something }, 1000);});
15. Remove words
Want to remove a certain word (s )?
$(document).ready(function() { var el = $('#id'); el.html(el.html().replace(/word/ig, ""));});
16. verify whether the element exists in the jquery object set
Simply test with the. length property if the element exists.
$(document).ready(function() { if ($('#id').length) { // do something }});
17. Make the entire DIV clickable
Want to make the complete div clickable?
$(document).ready(function() { $("div").click(function(){ //get the url from href attribute and launch the url window.location=$(this).find("a").attr("href"); return false; });// how to use<DIV><A href="index.html">home</A></DIV> });
18. Conversion between ID and Class.
When the Window size is changed, switch between ID and Class
$(document).ready(function() { function checkWindowSize() { if ( $(window).width() > 1200 ) { $('body').addClass('large'); } else { $('body').removeClass('large'); } }$(window).resize(checkWindowSize);});
19. Clone object
Clone a div or an other element.
$(document).ready(function() { var cloned = $('#id').clone();// how to use<DIV id=id></DIV> });
20. Place the elements in the middle of the screen
Center an element in the center of your screen.
$(document).ready(function() { jQuery.fn.center = function () { this.css("position","absolute"); this.css("top", ( $(window).height() - this.height() ) / 2+$(window).scrollTop() + "px"); this.css("left", ( $(window).width() - this.width() ) / 2+$(window).scrollLeft() + "px"); return this; } $("#id").center();});
21. Write your own Selector
Write your own selectors.
$(document).ready(function() { $.extend($.expr[':'], { moreThen1000px: function(a) { return $(a).width() > 1000; } }); $('.box:moreThen1000px').click(function() { // creating a simple js alert box alert('The element that you have clicked is over 1000 pixels wide'); });});
22. count the number of elements
Count an element.
$(document).ready(function() { $("p").size();});
23. Use your own Bullets
Want to use your own bullets instead of using the standard or images bullets?
$(document).ready(function() { $("ul").addClass("Replaced"); $("ul > li").prepend("‒ "); // how to use ul.Replaced { list-style : none; }});
24. Reference The Jquery class library on the Google host
Let Google host the jQuery script for you. This can be done in 2 ways.
[Code] // Example 1
<SCRIPT src = "http://www.google.com/jsapi"> </SCRIPT>
<SCRIPT type = text/javascript>
Google. load ("jquery", "1.2.6 ");
Google. setOnLoadCallback (function (){
// Do something
});
</SCRIPT> <SCRIPT type = text/javascript src = "http://ajax.googleapis.com/ajax/libs/jquery/1.2.6/jquery.min.js"> </SCRIPT>
// Example 2 :( the best and fastest way)
<SCRIPT type = text/javascript src = "http://ajax.googleapis.com/ajax/libs/jquery/1.2.6/jquery.min.js"> </SCRIPT> [/code]
25. Disable Jquery (animation) Effects
Disable all jQuery effects
$(document).ready(function() { jQuery.fx.off = true;});
26. Conflict Solution with other Javascript Class Libraries
To avoid conflict other libraries on your website, you can use this jQuery Method, and assign a different variable name instead of the dollar sign.
$(document).ready(function() { var $jq = jQuery.noConflict(); $jq('#id').show();});
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