表单提交方式与总结

1、button 提交

<input type="button" name="" onclick="validate()" value="登录" >

      js执行button传递的函数

	<script type="text/javascript">
		function validate() {
			var username = document.getElementById("username").value;
			var password = document.getElementById("password").value;
			//alert(username.length);
			var flag = true;
			if(username == null || username == '' || username.length > 25 ){
				alert("账号输入有误！");
				flag = flase;
			}
			if( password == null || password == '' || password.length < 6){
			 	alert("密码格式有误！");
				flag = flase;
			}
			var actionForm = document.getElementById("actionForm");
			if(flag){
				actionForm.submit();
			}
		}
	</script>

      表单传递地址：

<form action="<%=request.getContextPath() %>/servlet/LoginServlet" name="actionForm" id="actionForm" method="post">

  button 直接跳转目的地址：

<input type="button" onclick="javascript:window.location.href='<%=request.getContextPath()%>/register.jsp'" value="用户注册" />

2、submit

submit直接跳转目的地址：

<input type="submit"  value="查询" />

表单填写的地址信息：

<form action="<%=request.getContextPath() %>/servlet/QueryServlet"  method="post" >

submit跳转js进行本地验证：

表单填写方式：

<form action="login.do?act=login" method="post" onsubmit="return check(this)">

<input type=submit name="submit1" value="登陆"> 

<script type="text/javascript">
         function check(form) {
              if(form.userId.value=='') {
                    alert("请输入用户帐号!");
                    form.userId.focus();
                    return false;
               }
               if(form.password.value==''){
                    alert("请输入登录密码!");
                    form.password.focus();
                    return false;
                }
                return true;
         }
</script>

3、超链接提交方式：

表单填写跳转地址：

<form action="<%=request.getContextPath() %>/servlet/QueryServlet"  method="post" >

<a href="javaScript:page_nav1(document.forms[0],<%=pageNo-1%>)">上一页</a>
<a href="javaScript:page_nav1(document.forms[0],1)">1</a>
<a href="javaScript:page_nav1(document.forms[0],2)">2</a>
<a href="javaScript:page_nav1(document.forms[0],3)">3</a>
<a href="javaScript:page_nav1(document.forms[0],4)">4</a>
<a href="javaScript:page_nav1(document.forms[0],5)">5</a>
<a href="javaScript:page_nav1(document.forms[0],<%=pageNo+1%>)">下一页</a>

js代码参考：

function page_nav1(frm,pageNo){
		//frm.setAttribute("pageNo",num);
		frm.action="<%=request.getContextPath() %>/servlet/QueryServlet?pageNo="+pageNo;
		frm.submit();
	}

待补充。。。。。。。。