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！
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