Angularjs 角度ng型号ng重复清除所有输入
为什么函数Angularjs 角度ng型号ng重复清除所有输入,angularjs,input,ng-repeat,Angularjs,Input,Ng Repeat,为什么函数clear()在下面的示例中不起作用 HTML: <!DOCTYPE html> <html> <head> <script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script> <link rel="stylesheet" href="style.css" /> <script
clear()
在下面的示例中不起作用
HTML:
<!DOCTYPE html>
<html>
<head>
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script>
<link rel="stylesheet" href="style.css" />
<script src="script.js"></script>
</head>
<body>
<div class="wrapper" ng-app="app" ng-controller="AppController">
<div class="form-control" ng-repeat="n in [] | range:number">
<input type="text" ng-model="newVar" />
<span>{{newVar}}</span>
</div>
<!-- //form controll -->
<input type="range" ng-model="number" max="9" />
<label>Repeat input fields {{number}} times</label>
<button ng-click="clear()">clear</button>
</div>
</body>
</html>
var app = angular.module('app', []);
app.controller('AppController', function($scope) {
$scope.number = 5;
$scope.newVar = 0;
$scope.clear = function() {
$scope.newVar ='';
}
});//AppController
app.filter('range', function () {
return function (input, total) {
total = parseInt(total);
for (var i = 0; i < total; i++) {
input.push(i);
}
return input;
}; //filter range
});
{{newVar}}
重复输入字段{{number}}次
清楚的
控制器:
<!DOCTYPE html>
<html>
<head>
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script>
<link rel="stylesheet" href="style.css" />
<script src="script.js"></script>
</head>
<body>
<div class="wrapper" ng-app="app" ng-controller="AppController">
<div class="form-control" ng-repeat="n in [] | range:number">
<input type="text" ng-model="newVar" />
<span>{{newVar}}</span>
</div>
<!-- //form controll -->
<input type="range" ng-model="number" max="9" />
<label>Repeat input fields {{number}} times</label>
<button ng-click="clear()">clear</button>
</div>
</body>
</html>
var app = angular.module('app', []);
app.controller('AppController', function($scope) {
$scope.number = 5;
$scope.newVar = 0;
$scope.clear = function() {
$scope.newVar ='';
}
});//AppController
app.filter('range', function () {
return function (input, total) {
total = parseInt(total);
for (var i = 0; i < total; i++) {
input.push(i);
}
return input;
}; //filter range
});
var-app=angular.module('app',[]);
app.controller('AppController',函数($scope){
$scope.number=5;
$scope.newVar=0;
$scope.clear=函数(){
$scope.newVar='';
}
});//应用控制器
应用过滤器('范围',函数(){
返回函数(输入,总计){
总计=parseInt(总计);
对于(变量i=0;i
这是我的当您手动更新文本框值时,它实际上在childScope中设置了
newVar
值(由ng repeat指令创建),因此,不要将其绑定到newVar,而尝试将该值绑定到$parent.newVar
,这样会很好地工作
<!DOCTYPE html>
<html>
<head>
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script>
<link rel="stylesheet" href="style.css" />
<script src="script.js"></script>
</head>
<body>
<div class="wrapper" ng-app="app" ng-controller="AppController">
<div class="form-control" ng-repeat="n in [] | range:number">
<input type="text" ng-model="$parent.newVar" />
<span>{{newVar}}</span>
</div>
<!-- //form controll -->
<input type="range" ng-model="number" max="9" />
<label>Repeat input fields {{number}} times</label>
<button ng-click="clear()">clear</button>
</div>
</body>
</html>
{{newVar}}
重复输入字段{{number}}次
清楚的
是您的plunk
ng repeat
为每个“repeat”创建一个子作用域,因此您可以使用$parent
访问控制器的作用域。此外,可以使用数组/对象来存储所有值,而不是仅对视图中的所有不同行使用一个变量。您可以使用$index
内部ng repeat
执行此操作:
<!DOCTYPE html>
<html>
<head>
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script>
<link rel="stylesheet" href="style.css" />
<script src="script.js"></script>
</head>
<body>
<div class="wrapper" ng-app="app" ng-controller="AppController">
<div class="form-control" ng-repeat="n in [] | range:number">
<input type="text" ng-model="$parent.newVar[$index]" />
<span>{{newVar[$index]}}</span>
</div>
<!-- //form controll -->
<input type="range" ng-model="number" max="9" />
<label>Repeat input fields {{number}} times</label>
<button ng-click="clear()">clear</button>
</div>
</body>
</html>
clear()的作用是什么?我可以看到clear()正在删除所有输入值…是的,clear()必须是从输入中删除所有值作为旁注,您将一个变量绑定到所有文本框,这样它将更新所有文本框和span标记的值。clear()正在工作,但使用后它的作用域被破坏。所有输入类型相同data@andrzej这就是我在评论中提到的。谢谢!ng model=“$parent.newVar[$index]”这就是我所需要的