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A New Kind of JavaScript Library
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jQuery是什么? jQuery是继prototype之后又一个优秀的 Javascript框架
jQuery是轻量级的js库,兼容CSS3,还 兼容各种浏览器 (IE 6.0+, FF 2+, Safari 3.0+, Opera 9.0+, Chrome) 能快速,简洁的使用HTML documents, handle events, perform animations, 并且能把Ajax交互应用到网页。
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Find it JavaScript jQuery document.getElementById(id)
var myElement = $(“#myId”); $(“div p”); $(“div #msg”);
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分离JS与HTML JavaScript jQuery <body onload=“alert('hello');”>
$(document).ready(function(){ alert(“Hello World”); });
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简化DOM脚本 Without jQuery With jQuery
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$.ajax() $.ajax({ url : ‘document.xml’, type : ‘GET’; dateType : ‘xml’, error : function(){//do sth.}, success : fucntion(){//do sth.} });
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