angular 基于ng-messages的表单验证实例
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2024-02-04 18:34:04
最近在学习angular,那么今天也算个学习笔记吧!
html
最近在学习angular,那么今天也算个学习笔记吧!
html
<div class="form-group" ng-class="{'has-error': myform.myname.$touched && myform.myname.$invalid}"> <label class="col-xs-2 control-label">name</label> <div class="col-xs-6"> <input type="text" class="form-control" name="myname" ng-model="formdata.username" placeholder="2-10个中英文字符,aaa会重名,必填" name-check minlength="2" maxlength="10" required> </div> <div class="col-xs-4 form-control-static text-danger" ng-messages="myform.myname.$error" ng-messages-include="demos/form/error.html" ng-show="myform.myname.$touched"> </div> </div>
ng-messages="myform.myname.$error" 给出错误类型(required, char, exist, minlength)
error.html
<span ng-message="required">必填</span> <span ng-message="char">非法字符</span> <span ng-message="exist">名称已存在</span> <span ng-message="minlength">太短了</span>
directive name-check 利用ngmodel 的$validators,& $asyncvalidators 添加自定义验证
app.directive('namecheck', namecheck); namecheck.$inject = ['httpservice', '$q']; function namecheck(httpservice, $q){ var name_reg = /^[a-za-z\u4e00-\u9fa5]+$/; return { restrict: 'a', require: 'ngmodel', link:function($scope,element,attrs,ctrl){ ctrl.$validators.char = function(modelvalue, viewvalue) { var value = modelvalue || viewvalue; if(!name_reg.test(value)){ return false; } return true; }; ctrl.$asyncvalidators.exist = function(modelvalue, viewvalue){ var value = modelvalue || viewvalue; var deferred = $q.defer(); httpservice.get('api/users/' + value).then(function(res) { if(res.isexist){ deferred.reject(false); } deferred.resolve(true); }) return deferred.promise; } } } }
以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持。
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