我正在为多个输入值进行Angularjs表单验证。
以下是我面临的问题
- 假设我输入了"Johns"，指令将验证并给出错误无效名称
- 单击"名称"标签旁边的加号(+(按钮以添加新的"名称"输入
- 输入Peter。现在您将看到"；无效名称"；为彼得和约翰夫妇
- 点击Peter旁边的取消按钮
- 现在，代替"Johns"，尝试输入任何值，但没有进行验证。无论您输入什么值，它都是可接受的，并且不会进行验证
"Place"标签也是如此。
对每个元素进行验证的更好方法是什么？。有人能帮我一下吗。此外，我正在寻找一种在验证失败时禁用+按钮的方法。
下面是我写的代码
JS
var app = angular.module('multipleInputs',[]);
app.controller('multipleInputsCtrl',function($scope) {
$scope.users = [
{}
];
$scope.places = [{}];
$scope.addUser = function() {
var newUser = {};
$scope.users.push(newUser);
}
$scope.removeUser = function(user) {
var index = $scope.users.indexOf(user);
$scope.users.splice(index,1);
}
$scope.addPlace = function() {
var newPlace = {};
$scope.places.push(newPlace);
}
$scope.removePlace = function(place) {
var index = $scope.places.indexOf(place);
$scope.places.splice(index,1);
}
});
app.directive('nameValidation', function() {
var acceptableNames = ['John', 'Sachin', 'Sam', 'Sudhir', 'Nalanda'];
return {
require: 'ngModel',
link: function(scope, element, attr, mCtrl) {
mCtrl.$validators.name = function validationError(value) {
if (value && acceptableNames.includes(value)) {
return true;
} else if (value && !acceptableNames.includes(value)) {
return false;
} else {
return true;
}
}
}
};
})
app.directive('placeValidation', function() {
var acceptableNames = ['Chicago', 'Houston', 'Dallas', 'Seattle', 'Mumbai'];
return {
require: 'ngModel',
link: function(scope, element, attr, mCtrl) {
mCtrl.$validators.place = function validationError(value) {
if (value && acceptableNames.includes(value)) {
return true;
} else if (value && !acceptableNames.includes(value)) {
return false;
} else {
return true;
}
}
}
};
})
HTML
<!doctype html>
<html>
<head>
<title>Generate Multiple Input Fields Dynamically</title>
<link rel="stylesheet" href="styles.css" />
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.5.0/css/bootstrap.min.css" />
<script src="https://cdnjs.cloudflare.com/ajax/libs/angular.js/1.7.8/angular.min.js"></script>
<script src="multipleInputs.js"></script>
</head>
<body ng-app="multipleInputs" class="users-container" ng-controller="multipleInputsCtrl">
<form name="myForm">
<div>
<div class="form-group">
<label for="inputName" style="color:darkblue">Name <button type="button" class="btn btn-sm" ng-click="addUser()">+</button></label>
<section ng-repeat="user in users">
<input class="users-container-inputs-text" type="text" placeholder="First Name" ng-model="user.name" name="personName" name-validation>
<span class="users-container-inputs-button" ng-click="removeUser(user)">X
</span>
<span class="alert-danger" ng-show="myForm.personName.$error.name"> Invalid name</span>
</input>
</section>
</div>
<div class="form-group">
<label for="inputPlace" style="color:darkblue">Place <button type="button" class="btn btn-sm" ng-click="addPlace()">+</button></label>
<section ng-repeat="place in places">
<input class="users-container-inputs-text" type="text" placeholder="Place" ng-model="place.name" name="placeName" place-validation>
<span class="users-container-inputs-button" ng-click="removePlace(place)">X
</span>
<span class="alert-danger" ng-show="myForm.placeName.$error.place"> Invalid place</span>
</input>
</section>
</div>
</div>
</form>
</body>
</html>
代码笔链接：https://codepen.io/sudhir_rocks/pen/ZEpKVrR
您可以在AngularJS中使用ng-disabled Directive来禁用HTML元素。
https://docs.angularjs.org/api/ng/directive/ngDisabled
如果ng-disabled属性内的表达式返回true，则表单字段将被禁用。