在ng中,针对表单和空间提供了属性,用于验证控件交互的状态
布尔类型:
ng-valid 表单通过验证时设置
ng-invalid 表单未通过验证时设置
ng-pristine 表单没有改动时设置
ng-dirty 表单有改动时设置
对象:
$error
注意事项:
①给表单以及表单组件 加上name属性
②给需要用到的表单组件 ,加上ngModel
③属性的用法
myForm.t_age.dirty/pristine/valid/invalid/$error
案例如下
<!DOCTYPE html>
<html ng-app="myApp">
<head lang="en">
<meta charset="UTF-8">
<title></title>
<script src="js/angular.js"></script>
</head>
<body>
<div ng-controller="myCtrl">
<form name="myForm" ng-submit="submitInfo()">
<input type="text" name="t_name"
ng-model="userName" required/>
<span ng-show="myForm.t_name.$error.required">
姓名不能为空
</span>
<br/>
<input type="text" name="t_age"
ng-model="userAge" required/>
<span ng-show="myForm.t_age.$invalid">验证失败</span>
<span ng-show="myForm.t_age.$pristine">没有输入过</span>
<br/>
<input
ng-disabled="myForm.$invalid"
type="submit" value="提交"/>
</form>
</div>
<script>
var app = angular.module('myApp', ['ng']);
app.controller('myCtrl', function ($scope) {
$scope.submitInfo = function () {
console.log($scope.userName,$scope.userAge);
}
});
</script>
</body>
</html>