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105 lines (94 loc) · 3.22 KB
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Form Validation</title>
</head>
<body>
<form action="" id="registerForm" method="post">
请输入用户名：<input type="text" name="userName"/>
请输入密码：<input type="text" name="password"/>
请输入手机号码：<input type="text" name="phoneNumber"/>
<button id="sbmit">提交</button>
</form>
<script>
/******************策略对象*****************/
var strategies = {
isNonEmpty:function(value,errMsg){
if(value === ''){
return errMsg;
}
},
minLength:function(value,length,errMsg){
if(value.length<length){
return errMsg;
}
},
isMobile:function(value,errMsg){
if(!/(^1[3|5|8][0-9]{9}$)/.test(value)){
return errMsg;
}
}
};
/******************Validator 类*****************/
var Validator = function(){
this.cache = [];
}
Validator.prototype.add = function(dom,rules){
var self = this;
for(var i = 0,rule;rule = rules[i++];){
(function(rule){
var strategyAry = rule.strategy.split(":");
var errMsg = rule.errMsg;
self.cache.push(function(){
var strategy = strategyAry.shift();
strategyAry.unshift(dom.value);
strategyAry.push(errMsg);
return strategies[strategy].apply(dom,strategyAry);
});
})(rule);
}
};
Validator.prototype.start = function(){
for(var i = 0, validatorFunc;validatorFunc = this.cache[i++];){
var errMsg = validatorFunc();
if(errMsg){
return errMsg;
}
}
};
/******************客户调用代码*****************/
var registerForm = document.getElementById('registerForm');
var validataFunc = function(){
var validator = new Validator();
validator.add(registerForm.userName,[{
strategy:'isNonEmpty',
errMsg:'用户名不能为空'
},{
strategy:'minLength:6',
errMsg:'用户名长度不能小于6位'
}]);
validator.add(registerForm.password,[{
strategy:'minLength:6',
errMsg:'密码长度不能小于6位'
}]);
validator.add(registerForm.phoneNumber,[{
strtegy:'isMobile',
errMsg:'手机号码格式不正确'
}]);
var errMsg = validator.start();
return errMsg;
}
registerForm.onsubmit = function(){
var errMsg = validataFunc();
if(errMsg){
alert(errMsg);
return false;
}
}
document.getElementById('sbmit').onclick = function(){
registerForm.onsubmit();
}
</script>
</body>
</html>