1.图片预加载
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(function($) {
var cache = [];
// Arguments are image paths relative to the current page.
$.preLoadImages = function() {
var args_len = arguments.length;
for (var i = args_len; i--;) {
var cacheImage = document.createElement('img');
cacheImage.src = arguments[i];
cache.push(cacheImage);
}
}
jQuery.preLoadImages("image1.gif","/path/to/image2.png");
2. 在新窗口打开链接 (target=”blank”)
3.当支持 JavaScript 时为 body 增加 class
/* 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 */
4.平滑滚动页面到某个锚点
5. 鼠标滑动时的渐入和渐出
$(".thumbs img").hover(function(){
$(this).fadeTo("slow",1.0);
// This should set the opacity to 100% on hover
},function(){
$(this).fadeTo("slow",0.6);
// This should set the opacity back to 60% on mouseout
});
});
$(this).fadeTo("slow",1.0);
// This should set the opacity to 100% on hover
},function(){
$(this).fadeTo("slow",0.6);
// This should set the opacity back to 60% on mouseout
});
});
6. 制作等高的列
max_height) { max_height = $(this).height(); }
});
$("div.col").height(max_height);
7. 在一些老的浏览器上启用 HTML5 的支持
//然后在head中引入该js
8.测试浏览器是否支持某些 CSS3 属性
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var supports = (function() {
var div = document.createElement('div'),vendors = 'Khtml Ms O Moz Webkit'.split(' '),len = vendors.length;
return function(prop) {
if ( prop in div.style ) return true;
prop = prop.replace(/^[a-z]/,function(val) {
return val.toupperCase();
});
while(len--) {
if ( vendors[len] + prop in div.style ) {
// browser supports Box-shadow. Do what you need.
// Or use a bang (!) to test if the browser doesn't.
return true;
}
}
return false;
};
})();
if ( supports('textShadow') ) {
document.documentElement.className += ' textShadow';
9. 获取 URL 中传递的参数
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$.urlParam = function(name){
var results = new RegExp('[\\?&]' + name + '=([^]*)').exec(window.location.href);
if (!results) { return 0; }
return results[1] || 0;
}
10. 禁用表单的回车键提交
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$("#form").keypress(function(e) {
if (e.which == 13) {
return false;
}
});