jquery精彩代码
[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 |
13 |
jQuery.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
1 |
var 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
01 |
var 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 |
24 |
if ( 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 |
}); |

浙公网安备 33010602011771号