自个儿动手-表单2

自己动手-表单2
<!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>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
	<title>无标题文档</title>
	<script type="text/javascript">
	window.onload=function(){
		var btnTest=document.getElementById("btnTest");
		btnTest.onclick=function(e){
			var username=document.getElementById("username");
			if(username.value=="macrotea"){
				var loginForm=document.getElementById("loginForm");
				loginForm.submit();
			}else{
				//方式1:
/*				if(e){
					e.preventDefault();//标准方式		
				}else{
					event.returnValue=false;//IE方式
				}*/
				//方式2:
				return false;
			}	

		}
	}
	</script>
	<style type="text/csss">
		
	</style>
	</head>

	<body>
    <form id="loginForm" name="loginForm" method="post" action="http://macrotea.iteye.com">
        <p>用户名: <br />
            <input name="username" type="text" id="username" value="macrotea1" />
            <br />
            <input type="button" name="btnTest" id="btnTest" value="测试"/>
        </p>
    </form>
</body>
</html>