ng-repeat 完成后调用函数 [英] Calling a function when ng-repeat has finished

问题描述

我试图实现的基本上是一个在重复完成渲染时"处理程序.我能够检测到它何时完成，但我无法弄清楚如何从中触发功能.

检查小提琴:http://jsfiddle.net/paulocoelho/BsMqq/3/

JS

var module = angular.module('testApp', []).directive('onFinishRender', function () {返回 {限制:'A'，链接:函数(范围、元素、属性){if (scope.$last === true) {element.ready(函数(){console.log("调用:"+attr.onFinishRender);//在这里调用测试！});}}}});函数 myC($scope) {$scope.ta = [1, 2, 3, 4, 5, 6];功能测试() {console.log("测试执行");}}

HTML

<p ng-repeat="t in ta" on-finish-render="test()">{{t}}</p>

答案:从finishmove 工作小提琴:http://jsfiddle.net/paulocoelho/BsMqq/4/

解决方案

var module = angular.module('testApp', []).directive('onFinishRender', function ($timeout) {返回 {限制:'A'，链接:函数(范围、元素、属性){if (scope.$last === true) {$超时(函数(){scope.$emit(attr.onFinishRender);});}}}});

请注意，我没有使用 .ready() 而是将其包装在 $timeout 中.$timeout 确保它在 ng-repeated 元素真正完成渲染时执行(因为 $timeout 将在当前摘要循环结束时执行 -- 并且它还会在内部调用 $apply，与 setTimeout 不同).所以在 ng-repeat 完成后，我们使用 $emit 向外部作用域(兄弟作用域和父作用域)发出一个事件.

然后在您的控制器中，您可以使用 $on 捕获它:

$scope.$on('ngRepeatFinished', function(ngRepeatFinishedEvent){//你也得到了实际的事件对象//做东西，执行函数——随便……});

使用如下所示的 html:

{{item.name}}}

What I am trying to implement is basically a "on ng repeat finished rendering" handler. I am able to detect when it is done but I can't figure out how to trigger a function from it.

Check the fiddle:http://jsfiddle.net/paulocoelho/BsMqq/3/

JS

var module = angular.module('testApp', [])
    .directive('onFinishRender', function () {
    return {
        restrict: 'A',
        link: function (scope, element, attr) {
            if (scope.$last === true) {
                element.ready(function () {
                    console.log("calling:"+attr.onFinishRender);
                    // CALL TEST HERE!
                });
            }
        }
    }
});

function myC($scope) {
    $scope.ta = [1, 2, 3, 4, 5, 6];
    function test() {
        console.log("test executed");
    }
}

HTML

<div ng-app="testApp" ng-controller="myC">
    <p ng-repeat="t in ta" on-finish-render="test()">{{t}}</p>
</div>

Answer: Working fiddle from finishingmove: http://jsfiddle.net/paulocoelho/BsMqq/4/

解决方案

var module = angular.module('testApp', [])
    .directive('onFinishRender', function ($timeout) {
    return {
        restrict: 'A',
        link: function (scope, element, attr) {
            if (scope.$last === true) {
                $timeout(function () {
                    scope.$emit(attr.onFinishRender);
                });
            }
        }
    }
});

Notice that I didn't use .ready() but rather wrapped it in a $timeout. $timeout makes sure it's executed when the ng-repeated elements have REALLY finished rendering (because the $timeout will execute at the end of the current digest cycle -- and it will also call $apply internally, unlike setTimeout). So after the ng-repeat has finished, we use $emit to emit an event to outer scopes (sibling and parent scopes).

And then in your controller, you can catch it with $on:

$scope.$on('ngRepeatFinished', function(ngRepeatFinishedEvent) {
    //you also get the actual event object
    //do stuff, execute functions -- whatever...
});

With html that looks something like this:

<div ng-repeat="item in items" on-finish-render="ngRepeatFinished">
    <div>{{item.name}}}<div>
</div>

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