JS防止表单重复提交

/*方法1：设置一个全局JS变量*/
		var submited = false;
		function checkSubmit() {
			if (!submited)
			{
				submited = true;
				return true;
			}
			else {
				alert("请不要重复提交！");
				return false;
			}
		}

		function submitForm() {
			var f = document.getElementById("inputForm");
			if (checkSubmit())
			{
				f.submit();
			}
		}

 

<form id="inputForm" action="http://www.csdn.net" method="post">
		name:<input type="text" name="name"><br>
		pass:<input type="password" name="password"><br>
		<input type="button" value="submit" onclick="submitForm();"/>
	</form>

 

/*方法2：提交时将提交按钮设置为不可用，保证只能提交一次*/
		function submitForm() {
			var f = document.getElementById("inputForm");
			f.disabled = true;
			f.submit();
		}