<!DOCTYPE HTML><html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"><title>window对象</title><script type="text/javascript"> document.getElementById("btn").onclick = function(){ alert("欢迎来到慕课网"); window.open('http://www.imooc.com','_blank','width=600 height=400'); } </script></head><body><form><input type="button" value="点击我，打开新窗口" id='btn' /></form></body></html>
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