交付前检查和回车提交 _Web前端

提交前检查和回车提交

提交前的检查使用onSubmit事件，要将它放在form标签里面：

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
    
    <title>试试</title>
	
	<script type="text/javascript">
		function webchat_sendmsg(obj){
			alert("开始提交");
			return false;
		}
		
		function webchat_chkkeysend(event)
		{
		   if (event.keyCode==13) {
			   document.myForm.submit()
			}
		}
				
	</script>

  </head>
  
  <body>
    <form   action= "test.jsp" name="myForm"  method= "post " onSubmit= "return webchat_sendmsg(this); "> 
		<input id="webchat_usersend" type="text" height="20" size="65" maxlength="255" value="请在此输入您要说的话" onKeyDown="webchat_chkkeysend(event);" /> 
		<input type="submit" value="发送" />
    </form>
  </body>
</html>