AngularJS - 点击复选框时聚焦一个input元素 [英] AngularJS - Focusing an input element when a checkbox is clicked

问题描述

有没有被点击复选框时委托焦点元素的更清洁的方式。这里的脏版我砍死：

Is there a cleaner way of delegating focus to an element when a checkbox is clicked. Here's the dirty version I hacked:

HTML

<div ng-controller="MyCtrl">
    <input type="checkbox" ng-change="toggled()">
    <input id="name">
</div>

的JavaScript

var myApp = angular.module('myApp',[]);

function MyCtrl($scope, $timeout) {
    $scope.value = "Something";
    $scope.toggled = function() {
        console.debug('toggled');
        $timeout(function() {
            $('#name').focus();
        }, 100);
    }
}

的jsfiddle： http://jsfiddle.net/U4jvE/8/

推荐答案

这个怎么样？ plunker

 $scope.$watch('isChecked', function(newV){
      newV && $('#name').focus();
    },true);

@asgoth和@马克Rajcok是正确的。我们应该用指令。我只是懒惰。

@asgoth and @Mark Rajcok are correct. We should use directive. I was just lazy.

下面是该指令的版本。 plunker 我认为一个好理由，使之作为指令是可以重用这个事情。

Here is the directive version. plunker I think one good reason to make it as directive is you can reuse this thing.

所以在你的HTML你可以分配不同的情态，以不同的套

so in your html you can just assign different modals to different sets

<input type="checkbox" ng-model="isCheckedN">
<input xng-focus='isCheckedN'>


directive('xngFocus', function() {
    return function(scope, element, attrs) {
       scope.$watch(attrs.xngFocus, 
         function (newValue) { 
            newValue && element.focus();
         },true);
      };    
});

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