雪飘落在对面的屋顶上,屋顶像蒙了一条闪着银光的纱巾,美丽极了。雪飘落在树上,树上像缀满了银色的小花。雪飘落在操场上,操场变得像铺满棉花一样白茫茫的一片。
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; } } } }
到此这篇关于angular 基于ng-messages的表单验证实例就介绍到这了。太讲究理智,容易与人产生磨擦;太坚持己见,终会走入穷途末路。更多相关angular 基于ng-messages的表单验证实例内容请查看相关栏目,小编编辑不易,再次感谢大家的支持!