validateemail.htm

来自「各种实用的javascript脚本」· HTM 代码 · 共 33 行

HTM
33
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd"> 
<html>
<head>
	<title>
		testJavaScript
	</title>
</head>
<body>
	<script lang="JavaScript">
	<!--
		function test(){
			var flag=true;
			var field=document.forms.form1.email.value;
			if (field.length<5) flag=false;
			at_location=field.indexOf("@");
			dot_location=field.indexOf(".");
			if (at_location == -1 || dot_location==-1 || at_location>dot_location) flag=false;
			if (at_location==0) flag=false;
			if (dot_location-at_location<=1) flag=false;
			if (field.length-dot_location<=1) flag=false;
			if (!flag) alert("Email is wrong");
			else alert("Good");
			return false;
			
		}
	-->
	</script>
	<form name="form1" action="http://localhost:8080/TestHtml/a.jsp" method="post" onSubmit="return test()">
		Email:<input type="text" name="email">
		<input type="submit" value="Submit">
	</form>
</body>
</html>

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