jQuery用面向对象的思想来编写验证表单的插件
下面是一个完整的html页面代码，可以直接运行测试的。
<html>
<head>
<title>jQuery用面向对象的思想来编写验证表单的插件</title>
<style type="text/css">
form {margin:2em 0;}
input {font-family:sans-serif; font-size:1.4em; padding:4px;}
label {display: block; margin-bottom:2px; font-size:1.4em;}
fieldset input {width: 225px; margin-bottom: 5px;}
legend {font-weight:bold; font-size:1.4em;}
fieldset { padding:2em; border: 1px solid #ccc;}
input[type=submit] {margin-top:0.5em;}
.error input {border:1px solid red;}
.errorlist {margin:0; color: red; margin-bottom:10px;}
#valid-form {margin:5px 0; display: block; color:green;}
</style>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1/jquery.min.js">
</script>
<script type="text/javascript">
(function($) {
/*
Validation Singleton
*/
var Validation = function() {
var rules = {
email : {
check: function(value) {
if(value)
return testPattern(value,"[a-z0-9!#$%&'*+/=?^_`{|}~-]+(?:\.[a-z0-9!#$%&'*+/=?^_`{|}~-]+)*@(?:[a-z0-9](?:[a-z0-9-]*[a-z0-9])?\.)+[a-z0-9](?:[a-z0-9-]*[a-z0-9])");
return true;
},
msg : "Enter a valid e-mail address."
},
url : {
check : function(value) {
if(value)
return testPattern(value,"^https?://(.+\.)+.{2,4}(/.*)?$");
return true;
},
msg : "Enter a valid URL."
},
required : {
check: function(value) {
if(value)
return true;
else
return false;
},
msg : "This field is required."
}
}
var testPattern = function(value, pattern) {
var regExp = new RegExp(pattern,"");
return regExp.test(value);
}
return {
addRule : function(name, rule) {
rules[name] = rule;
},
getRule : function(name) {
return rules[name];
}
}
}
/*
Form factory
*/
var Form = function(form) {
var fields = [];
form.find("[validation]").each(function() {
var field = $(this);
if(field.attr('validation') !== undefined) {
fields.push(new Field(field));
}
});
this.fields = fields;
}
Form.prototype = {
validate : function() {
for(field in this.fields) {
this.fields[field].validate();
}
},
isValid : function() {
for(field in this.fields) {
if(!this.fields[field].valid) {
&nbs
补充：web前端 , JavaScript ,
