1. 禁用右键点击（Disable right-click）
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$(document).ready(function(){ $(document).bind("contextmenu",function(e){ return false; }); }); |
2. 禁用搜索文本框
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$(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( $.trim(input.val()) == '' ){ input.val(originalvalue); } }); } |
3. 新窗口打开链接
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$(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
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$(document).ready(function() { // Target Firefox 2 and above if ($.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 && $.browser.version > 6){ // do something } }); |
5. 预加载图片（Preloading images）
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$(document).ready(function() { jQuery.preloadImages = function() { for(var i = 0; i<arguments.length; i++)="" {="" jquery("<img="">").attr("src", arguments[i]); } } // how to use $.preloadImages("image1.jpg"); }); |
6. 样式筛选（CSS Style switcher）
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$(document).ready(function() { $("a.Styleswitcher").click(function() { //swicth the LINK REL attribute with the value in A REL attribute $('link[rel=stylesheet]').attr('href' , $(this).attr('rel')); }); // how to use // place this in your header // the links <a href="#" rel="default.css">Default Theme</a> <a href="#" rel="red.css">Red Theme</a> <a href="#" rel="blue.css">Blue Theme</a> }); |
7. 列高度相同
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$(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($(".right")); }); }); |
8. 字体大小调整（Font resizing）
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$(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; $('html').css('font-size', newFontSize); return false; }); }); |
9. 返回页面顶部（Smooth(animated) page scroll）
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$(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; $('html,body') .animate({scrollTop: targetOffset}, 900); return false; } } }); // how to use // place this where you want to scroll to <a name="top"></a> // the link <a href="#top">go to top</a> }); |
11. 获取鼠标的xy坐标（Get the mouse cursor x and y axis）
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$(document).ready(function() { $().mousemove(function(e){ //display the x and y axis values inside the div with the id XY $('#XY').html("X Axis : " + e.pageX + " | Y Axis " + e.pageY); }); // how to use |
});
12. 验证元素是否为空（Verify if an Element is empty）
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$(document).ready(function() { if ($('#id').html()) { // do something } }); |
13. 替换元素（Replace a element）
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$(document).ready(function() { $('#id').replaceWith(' |
I have been replaced
‘); });
14. 延迟加载（jQuery timer callback functions）
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$(document).ready(function() { window.setTimeout(function() { // do something }, 1000); }); |
15. 移除单词（Remove a word）
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$(document).ready(function() { var el = $('#id'); el.html(el.html().replace(/word/ig, "")); }); |
16. 验证元素是否存在（Verify that an element exists in jQuery）
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$(document).ready(function() { if ($('#id').length) { // do something } }); |
17. 使整个DIV可点击（Make the entire DIV clickable）
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$(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 |
});
18. id和class切换（Switch between classes or id’s when resizing the window）
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$(document).ready(function() { function checkWindowSize() { if ( $(window).width() > 1200 ) { $('body').addClass('large'); } else { $('body').removeClass('large'); } } $(window).resize(checkWindowSize); }); |
19. 克隆对象（Clone a object）
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$(document).ready(function() { var cloned = $('#id').clone(); // how to use |
});
20. 使元素居中屏幕（Center an element on the screen）
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$(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; } $("#id").center(); }); |
21. 自定义选择器（Write our own selector）
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$(document).ready(function() { $.extend($.expr[':'], { moreThen1000px: function(a) { return $(a).width() > 1000; } }); $('.box:moreThen1000px').click(function() { // creating a simple js alert box alert('The element that you have clicked is over 1000 pixels wide'); }); }); |
22. 统计元素个数（Count a element）
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$(document).ready(function() { $("p").size(); }); |
23. 自定义Bullets（Use Your Own Bullets）
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$(document).ready(function() { $("ul").addClass("Replaced"); $("ul > li").prepend("‒ "); // how to use ul.Replaced { list-style : none; } }); |
24. 引用google分发的jQuery（Let Google host jQuery for you）
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//Example 1<script src="http://www.google.com/jsapi"></script><script type="text/javascript">// <![CDATA[ google.load("jquery", "1.2.6"); google.setOnLoadCallback(function() { // do something }); // ]]></script><script src="http://ajax.googleapis.com/ajax/libs/jquery/1.2.6/jquery.min.js" type="text/javascript"></script>// Example 2:(the best and fastest way)<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.2.6/jquery.min.js" type="text/javascript"></script> |
25. 禁用jQuery动画（Disable jQuery animations）
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$(document).ready(function() { jQuery.fx.off = true; }); |
26. 防止不兼容冲突（No conflict-mode）
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$(document).ready(function() { var $jq = jQuery.noConflict(); $jq('#id').show(); }); |
jquery 速查表：
原贴地址：http://blog.csdn.net/sunboy_2050/article/details/8179162
