add.jsp
<%@page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<link rel="shortcut icon" type="image/x-icon" href="../favicon.ico" />
<title>添加</title>
<link href="/IMS/css/css.css" rel="stylesheet" type="text/css">
<script src="/IMS/lib/ValidForm.js"></script>
<script src="/IMS/lib/MakeRequest.js"></script>
<script>
window.onload = initForm;
function initForm() {
validForm(document.getElementById("add"));
makeRequest(document.getElementById("aname"));
}
</script>
</head>
<body>
<form action="" method="post" name="add" id="add">
<input type="hidden" name="action" value="add">
<table>
<tr>
<td width="120" align="right">名称：</td>
<td width="180" align="left"><input name="aname" type="text" id="aname" autofocus="autofocus" date="Department?action=s&name=" class="reqd"></td>
</tr>
<tr>
<td align="right">权限：</td>
<td align="left"><input name="level" id="level" class="reqd"></td>
</tr>
<tr>
<td align="right">
<a href="index.jsp">返回</a>
</td>
<td align="left"><input name="add" type="submit" id="add" value="添加"></td>
</tr>
</table>
</form>
</body>
</html>
ValidForm.js
function validForm(obj) {
obj.addEventListener('submit', doit(tttt), false);
function doit(obj) {
var allGood = true;
var allTags = obj.getElementsByTagName("*");
for (var i = 0; i < allTags.length; i++) {
if (!validTag(allTags[i])) {
allGood = false;
}
}
return allGood;
function validTag(thisTag) {
var outClass = "";
var allClasses = thisTag.className.split(" ");
for (var j = 0; j < allClasses.length; j++) {
outClass += validBasedOnClass(allClasses[j]) + " ";
}
thisTag.className = outClass;
if (outClass.indexOf("invalid") > -1) {
thisTag.focus();
if (thisTag.nodeName == "INPUT") {
thisTag.select();
}
return false;
}
return true;
function validBasedOnClass(thisClass) {
var classBack = "";
switch (thisClass) {
case "":
case "invalid":
break;
case "reqd":
if (allGood && thisTag.value == "") {
classBack = "invalid ";
}
classBack += thisClass;
break;
default:
classBack += thisClass;
}
return classBack;
}
}
}
}
obj.addEventListener('submit', doit(tttt), false);这句话是有问题的；
addEventListener接收的第二个参数是function，而不是一个函数的执行结果；
所以需要把doit重写（给你提供个思路）：
doit(tttt)；
function doit(obj){
return function(){
//你的业务逻辑，这个才会在submit的时候执行
}
}
addEventListener IE8-不支持，而且你tttt变量也没有定义
obj.addEventListener('submit', doit(tttt), false);
===》
if(obj.addEventListener)
obj.addEventListener('submit', function(){doit(obj)}, false);
else if(obj.attachEvent)o.attachEvent('onsubmit', function(){doit(obj)});
else obj.onsubmit=function(){doit(obj)}