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console 命令行工具 X clear 

                    

                        
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console

            
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" 
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">

<head>
	<title>新建网页</title>
	<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
	<meta name="description" content="" />
	<meta name="keywords" content="" />
	<script type=text/javascript>
        

        function t1()
        {alert(document.getElementById('artcicle'));}
        function t2()
        {alert(document.getElementsByTagName('div'));}
        function t3()
        {alert(document.getElementsByName('hobby'));
        /*
            for(var i=0,inp=document.getElementsByName('hobby'),len=inp.length;i < len;i++)
            {alert(inp[1]);}
        */    
            }
	</script>

	<style type="type/css">
	</style>
</head>
  <body>
	 <p>
		<span>我是span</span>
     </p>	
    <img src="aaa.jpg" />
    <div id="artcicle">文章内容</div>
    <p>
            <input type="text" name="hobby" />
            <input type="text" name="hobby" />
            <input type="text" name="hobby" />
    </p>
    <p>
        <input type="button" value="ById" onclick="t1();" />
    </p>
        <p>
        <input type="button" value="ByTagName" onclick="t2();" />
    </p>
            <p>
        <input type="button" value="ByName" onclick="t3();" />
    </p>
  </body>
</html>