看过 jquery 验证框架，在使用的时候，其实还是很晕的，很麻烦，使用的时候代码也不简洁，因此才有了弄一个自己的jquery验证框架的计划，基本原理就是对 input ,select, textarea 这三类控件做校验，在里面定义自定义属性作为检验。 另外采用js 做i18n 国际化，通过cookies 中的语言，调用不同的js 语言包, 对于自己开发项目来说，足够用了，而且，还可以灵活扩展。个人用应该不错。
为了测试这个验证框架，其实静态html 页面足够了，但习惯问题，自己搭建了一个简单的 动态web 工程，后面会给出源代码下载
1. 验证框架主要采用 jquery异步对象去扩展的，也就是jquery defered 的用法，这样去做验证的好处是，即使某些验证是采用ajax 方式去验证的，结合jquery when 函数，一样可以批量校验. 主要代码如下:
function Validator(errorHandle){ this.errorHandle = errorHandle; this.elements = ["input","select","textarea"]; } Validator.prototype = { contructor : Validator, rules : {}, addRules : function(ruleName, validFunction, errorFunction){ this.rules[ruleName] = { validFunction : validFunction, errorFunction : errorFunction }; }, eventFunction : function(item){ var self = this; $(item).die().live("blur", function(){ self.validateItem(item); }); }, bindingEvent : function(divId){ var self = this; self.elements.forEach(function(element){ $("#" + divId).find(element).each(function(i, item){ self.eventFunction(item); }); }); }, validateDiv : function(divId){ var dtdList = [], self = this; self.elements.forEach(function(element){ $("#" + divId).find(element).each(function(i, item){ dtdList.push( self.validateItem(item) ); }); }); self.elements.forEach(function(element){ if ($("#" + divId).find(element).length == 0){ var deferred = $.Deferred(); deferred.resolve(); dtdList.push(deferred); } }); return $.when.apply(null, dtdList).fail(function(){ if(self.errorHandle) { self.errorHandle.call(null, divId); } }); }, validateItem : function(d){ var self = this; var ruleList = []; for(var r in this.rules){ if( $(d).is("[" + r + "]") ){ ruleList.push(r); } } var dtd = $.Deferred(); var checked = function(){ if ( ruleList.length >= 1 ){ var ok = self.validate(d, ruleList[0]); ok.done(function(){ if(ruleList.length >= 2){ self.validate(d, ruleList[1]); } ruleList.shift(); checked(); }).fail(function(){ dtd.reject(); }); } else { dtd.resolve(); } ; //dtd.resolve(); //return dtd; }; checked(); return dtd; }, validate : function(d, rule){ var value = $(d).val(), attributeValue = $(d).attr(rule), f = this.rules[rule].validFunction, self = this; var ok = f.call(null, d, value, attributeValue); return ok.fail(function(item){ if($(item).siblings("[validationError]").length != 0 ){ $(item).siblings("[validationError]").remove(); } if(self.rules[rule].errorFunction){ self.rules[rule].errorFunction(d, rule); }else { self.showErrorMessage(d, rule); } }).done(function(item){ if($(item).siblings("[validationError]").length != 0 ){ $(item).siblings("[validationError]").remove(); } }); }, validationByRegx : function(d, value, regx){ var dtd = $.Deferred(), ok = regx.test(value); if(ok || $.trim(value) === ""){ dtd.resolve(d); } else { dtd.reject(d); } return dtd.promise(); }, /*默认的出错处理方法*/ showErrorMessage : function(item,rule){ var msgInfo = getJSLocale( $(item).attr("msgid") ); var ruleInfo = getJSLocale( "msg_" + rule ); if($(item).siblings("span").find("[msgid='msg_"+ rule +"']").length == 0){ var message = msgInfo || ruleInfo; $(item).parent().append("<span validationError><label msgid='msg_" + rule +"'>" + message + "</label></span>"); } } }; //add default rule Validator.prototype.addRules("required", function(d, value, attributeValue){ var dtd = $.Deferred(); var ok = !($.trim(value) == "" || value == null); if(ok){ dtd.resolve(d); } else { dtd.reject(d); } return dtd.promise(); }); Validator.prototype.addRules("maxLen", function(d, value, attributeValue){ var dtd = $.Deferred(); var ok = (value.length <= attributeValue); if(ok){ dtd.resolve(d); } else { dtd.reject(d, attributeValue); } return dtd.promise(); }, function(d, rule){ if($(d).siblings("span").find("[msgid='msg_" + rule + "']").length == 0){ var attributeValue = $(d).attr(rule); var msgInfo = getJSLocale( $(d).attr("msgid"), {length:attributeValue} ); var ruleInfo = getJSLocale( "msg_" + rule, {length:attributeValue} ); var message = msgInfo || ruleInfo; $(d).parent().append("<span validationError><label msgid='msg_" + rule + "' errorMsgParam='"+attributeValue+"'>" + message + "</label></span>"); } }); Validator.prototype.addRules("minLen", function(d, value, attributeValue){ var dtd = $.Deferred(); var ok = (value.length >= attributeValue); if(ok){ dtd.resolve(d); } else { dtd.reject(d, attributeValue); } return dtd.promise(); }, function(d, rule){ if($(d).siblings("span").find("[msgid='msg_" + rule + "']").length == 0){ var attributeValue = $(d).attr(rule); var msgInfo = getJSLocale( $(d).attr("msgid"), {length:attributeValue} ); var ruleInfo = getJSLocale( "msg_" + rule, {length:attributeValue} ); var message = msgInfo || ruleInfo; $(d).parent().append("<span validationError><label msgid='msg_" + rule + "' errorMsgParam='"+attributeValue+"'>" + message + "</label></span>"); } }); Validator.prototype.addRules("url", function(d, value, attributeValue){ return Validator.prototype.validationByRegx(d, value, /^(((ht|f)tp(s?))\:\/\/)[a-zA-Z0-9]+\.[a-zA-Z0-9]+[\/=\?%\-&_~`@[\]\':+!]*([^<>\"\"])*$/i); }); Validator.prototype.addRules("email", function(d, value, attributeValue){ return Validator.prototype.validationByRegx(d, value, /^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})+$/); }); Validator.prototype.addRules("english", function(d, value, attributeValue){ return Validator.prototype.validationByRegx(d, value, /^[a-zA-Z0-9_\-]+$/); });
对于html 页面的验证方式呢，采用如下方式: