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http://www.oschina.net/code/snippet_12_7271

[代码] 图片预加载

01(function($) {
02  var cache = [];
03  // Arguments are image paths relative to the current page.
04  $.preLoadImages = function() {
05    var args_len = arguments.length;
06    for (var i = args_len; i--;) {
07      var cacheImage = document.createElement('img');
08      cacheImage.src = arguments[i];
09      cache.push(cacheImage);
10    }
11  }
12 
13jQuery.preLoadImages("image1.gif", "/path/to/image2.png");

[代码] 在新窗口打开链接 (target=”blank”)

1$('a[@rel$='external']').click(function(){
2     this.target = "_blank";
3});
4 
5/*
6   Usage:
7   <a href="http://www.catswhocode.com" rel="external">catswhocode.com</a>
8*/

[代码] 当支持 JavaScript 时为 body 增加 class

1/* 该代码只有1行,但是最简单的用来检测浏览器是否支持 JavaScript 的方法,如果支持 JavaScript 就在 body 元素增加一个 hasJS 的 class */
2$('body').addClass('hasJS');

[代码] 平滑滚动页面到某个锚点

01$(document).ready(function() {
02    $("a.topLink").click(function() {
03        $("html, body").animate({
04            scrollTop: $($(this).attr("href")).offset().top + "px"
05        }, {
06            duration: 500,
07            easing: "swing"
08        });
09        return false;
10    });
11});

[代码] 鼠标滑动时的渐入和渐出

1$(document).ready(function(){
2    $(".thumbs img").fadeTo("slow", 0.6); // This sets the opacity of the thumbs to fade down to 60% when the page loads
3 
4    $(".thumbs img").hover(function(){
5        $(this).fadeTo("slow", 1.0); // This should set the opacity to 100% on hover
6    },function(){
7        $(this).fadeTo("slow", 0.6); // This should set the opacity back to 60% on mouseout
8    });
9});

[代码] 制作等高的列

1var max_height = 0;
2$("div.col").each(function(){
3    if ($(this).height() > max_height) { max_height = $(this).height(); }
4});
5$("div.col").height(max_height);

[代码] 在一些老的浏览器上启用 HTML5 的支持

01(function(){
02    if(!/*@cc_on!@*/0)
03        return;
04    var e = "abbr,article,aside,audio,bb,canvas,datagrid,datalist,details,dialog,eventsource,figure,footer,header,hgroup,mark,menu,meter,nav,output,progress,section,time,video".split(','),i=e.length;while(i--){document.createElement(e[i])}
05})()
06 
07//然后在head中引入该js
08<!--[if lt IE 9]>
09<script src="http://html5shim.googlecode.com/svn/trunk/html5.js"></script>
10<![endif]-->

[代码] 测试浏览器是否支持某些 CSS3 属性

01var supports = (function() {
02   var div = document.createElement('div'),
03      vendors = 'Khtml Ms O Moz Webkit'.split(' '),
04      len = vendors.length;
05 
06   return function(prop) {
07      if ( prop in div.style ) return true;
08 
09      prop = prop.replace(/^[a-z]/, function(val) {
10         return val.toUpperCase();
11      });
12 
13      while(len--) {
14         if ( vendors[len] + prop in div.style ) {
15            // browser supports box-shadow. Do what you need.
16            // Or use a bang (!) to test if the browser doesn't.
17            return true;
18         }
19      }
20      return false;
21   };
22})();
23 
24if ( supports('textShadow') ) {
25   document.documentElement.className += ' textShadow';

[代码] 获取 URL 中传递的参数

1$.urlParam = function(name){
2    var results = new RegExp('[\\?&]' + name + '=([^&#]*)').exec(window.location.href);
3    if (!results) { return 0; }
4    return results[1] || 0;
5}

[代码] 禁用表单的回车键提交

1$("#form").keypress(function(e) {
2  if (e.which == 13) {
3    return false;
4  }
5});
posted on 2011-11-23 13:15 SIMONE 阅读(309) 评论(0)  编辑  收藏 所属分类: JavaScript

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