1. 禁用右键点击(Disable right-click)
- $(document).ready(function(){
- $(document).bind("contextmenu",function(e){
- return false;
- });
- });
2. 禁用搜索文本框(Disappearing search field text)
- $(document).ready(function() {
- $("input.text1").val("Enter your search text here");
- textFill($('input.text1'));
- });
- function textFill(input){ //input focus text function
- var originalvalue = input.val();
- input.focus( function(){
- if( $.trim(input.val()) == originalvalue ){ input.val(''); }
- });
- input.blur( function(){
- if( $.trim(input.val()) == '' ){ input.val(originalvalue); }
- });
- }
3. 新窗口打开链接(Opening links in a new window)
- $(document).ready(function() {
- //Example 1: Every link will open in a new window
- $('a[href^="http://"]').attr("target", "_blank");
- //Example 2: Links with the rel="external" attribute will only open in a new window
- $('a[@rel$='external']').click(function(){
- this.target = "_blank";
- });
- });
- // how to use
- <a href="http://www.opensourcehunter.com" rel="external">open link</a>
4. 检测浏览器(Detect browser)
- $(document).ready(function() {
- // Target Firefox 2 and above
- if ($.browser.mozilla && $.browser.version >= "1.8" ){
- // do something
- }
- // Target Safari
- if( $.browser.safari ){
- // do something
- }
- // Target Chrome
- if( $.browser.chrome){
- // do something
- }
- // Target Camino
- if( $.browser.camino){
- // do something
- }
- // Target Opera
- if( $.browser.opera){
- // do something
- }
- // Target IE6 and below
- if ($.browser.msie && $.browser.version <= 6 ){
- // do something
- }
- // Target anything above IE6
- if ($.browser.msie && $.browser.version > 6){
- // do something
- }
- });
5. 预加载图片(Preloading images)
- $(document).ready(function() {
- jQuery.preloadImages = function()
- {
- for(var i = 0; i<arguments.length; i++)="" {="" jquery("<img="">").attr("src", arguments[i]);
- }
- }
- // how to use
- $.preloadImages("image1.jpg");
- });
- </arguments.length;>
6. 样式筛选(CSS Style switcher)
- $(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" href="default.css" type="text/css">
- // the links
- <a href="#" class="Styleswitcher" rel="default.css">Default Theme</a>
- <a href="#" class="Styleswitcher" rel="red.css">Red Theme</a>
- <a href="#" class="Styleswitcher" rel="blue.css">Blue Theme</a>
- });
7. 列高度相同(Columns of equal height)
- $(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. 字体大小调整(Font resizing)
- $(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. 返回页面顶部(Smooth(animated) page scroll)
- $(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. 获取鼠标的xy坐标(Get the mouse cursor x and y axis)
- $(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. 验证元素是否为空(Verify if an Element is empty)
- $(document).ready(function() {
- if ($('#id').html()) {
- // do something
- }
- });
13. 替换元素(Replace a element)
- $(document).ready(function() {
- $('#id').replaceWith('
- <div>I have been replaced</div>
- ');
- });
14. 延迟加载(jQuery timer callback functions)
- $(document).ready(function() {
- window.setTimeout(function() {
- // do something
- }, 1000);
- });
15. 移除单词(Remove a word)
- $(document).ready(function() {
- var el = $('#id');
- el.html(el.html().replace(/word/ig, ""));
- });
16. 验证元素是否存在(Verify that an element exists in jQuery)
- $(document).ready(function() {
- if ($('#id').length) {
- // do something
- }
- });
17. 使整个DIV可点击(Make the entire 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. id和class切换(Switch between classes or id’s when resizing the window)
- $(document).ready(function() {
- function checkWindowSize() {
- if ( $(window).width() > 1200 ) {
- $('body').addClass('large');
- }
- else {
- $('body').removeClass('large');
- }
- }
- $(window).resize(checkWindowSize);
- });
19. 克隆对象(Clone a object)
- $(document).ready(function() {
- var cloned = $('#id').clone();
- // how to use
- <div id="id"></div>
- });
20. 使元素居中屏幕(Center an element on the 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. 自定义选择器(Write our own selector)
- $(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. 统计元素个数(Count a element)
- $(document).ready(function() {
- $("p").size();
- });
23. 自定义Bullets(Use Your Own Bullets)
- $(document).ready(function() {
- $("ul").addClass("Replaced");
- $("ul > li").prepend("‒ ");
- // how to use
- ul.Replaced { list-style : none; }
- });
24. 引用google分发的jQuery(Let Google host jQuery for you)
- //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 src="http://ajax.googleapis.com/ajax/libs/jquery/1.2.6/jquery.min.js" type="text/javascript"></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>
25. 禁用jQuery动画(Disable jQuery animations)
- $(document).ready(function() {
- jQuery.fx.off = true;
- });
26. 防止不兼容冲突(No conflict-mode)
- $(document).ready(function() {
- var $jq = jQuery.noConflict();
- $jq('#id').show();
- });