JavaScript 表单验证规则集合对象实现

<script type="text/javascript">
// 可以将更多的验证规则继续添加到 errMsg 对象中
var errMsg = {
required: {
msg: "This field is required.",
// load 参数指定是否在页面加载时进行验证
test: function(obj, load) {
return obj.value.length > 0 || load || obj.value == obj.defaultValue;
} 
}, 
},
email: {
msg: "Not a valid email address.",
test: function(obj) {
return /^[a-z0-9A-Z+_.-]+\@([a-z0-9A-Z-_]+\.)+[a-z0-9]{2,4}$/i.test(obj.value);
} 
}, 
},
url: {
msg: "Not a valid URL.",
test: function(obj) {
return obj.value == "http://" || /^https?:\/\/([a-z0-9-]+\.)+[a-z0-9]{2,4}.*$\/.test(obj.value);
} 
} 
} 
},
// 示例代码
onload = function() {
$("url").onblur = function() {
if (errMsg.url.test(this)) {
alert("right");
} else {
} 
} 
} 
alert(errMsg.url.msg);