推薦10 個很棒的 jQuery 特效代碼，jquery特效代碼

推薦10 個很棒的 jQuery 特效代碼，jquery特效代碼

1.圖片預先載入    

(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. 在新視窗開啟連結 (target=”blank”)    

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

3.當支援 JavaScript 時為 body 增加 class    

/* 該代碼只有1行，但是最簡單的用來檢測瀏覽器是否支援 JavaScript 的方法，如果支援 JavaScript 就在 body 元素增加一個 hasJS 的 class */

$('body').addClass('hasJS');

4.平滑滾動頁面到某個錨點    

$(document).ready(function() {  $("a.topLink").click(function() {    $("html, body").animate({      scrollTop: $($(this).attr("href")).offset().top + "px"    }, {      duration: 500,      easing: "swing"    });    return false;  });});

5. 滑鼠滑動時的漸入和漸出    

$(document).ready(function(){  $(".thumbs img").fadeTo("slow", 0.6); // This sets the opacity of the thumbs to fade down to 60% when the page loads   $(".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  });});

6. 製作等高的列    

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

7. 在一些老的瀏覽器上啟用 HTML5 的支援    

(function(){  if(!/*@cc_on!@*/0)    return;  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])}})() 

//然後在head中引入該js
<!--[if lt IE 9]>
<script src="http://html5shim.googlecode.com/svn/trunk/html5.js"></script>
<![endif]-->
8.測試瀏覽器是否支援某些 CSS3 屬性    

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. 擷取 URL 中傳遞的參數    

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

10. 禁用表單的斷行符號鍵提交    

$("#form").keypress(function(e) { if (e.which == 13) {  return false; }});