標籤：function world button title
<!DOCTYPE html><html><head><meta charset="UTF-8"><title>Insert title here</title><script type="text/javascript" src="js/jquery-1.7.2.js"></script><script type="text/javascript">$(function(){//相當於window.onload$("button").click(function(){//alert("Hello world!!!");alert($(this).text());//JQuery對象和DOM對象//擷取一個JQuery對象var $btn = $("button");//JQuery對象是一個數組//alert($btn.length);//可以通過數組的下標轉為DOM對象//alert($btn[0].firstChild.nodeValue);//由DOM對象轉為JQuery對象var btn = document.getElementById("btn");//alert($(btn).text());//$("#id") document.getElementById("id");//$("tagName") document.getElementByTagName("tagName");});})</script></head><body><button id="btn">click me1</button><button>click me2</button></body></html>
本文出自 “阿凡達” 部落格，請務必保留此出處http://shamrock.blog.51cto.com/2079212/1564872
JQuery學習筆記-Hello world
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