提供范围的破坏$事件的例子吗? [英] Provide an example of scope's $destroy event?
问题描述
提供破坏活动范围的$的例子吗?下面是从<参考文档href=\"http://docs.angularjs.org/api/ng.%24rootScope.Scope#%24destroy\">http://docs.angularjs.org/api/ng.$rootScope.Scope#$destroy
$摧毁()
删除从父当前范围(及其所有的孩子)
范围。去除意味着到$电话消化()将不再
传播到目前的范围和它的孩子。拆除也意味着
当前范围进行垃圾回收。
该$ destroy()方法通常使用的指令,如ngRepeat为
管理环的展开
一个范围破坏就在一个$破坏事件上播出
这个范围。应用code可以注册一个$破坏事件处理程序
这将给予机会执行任何必要的清理。
块引用>解决方案演示: http://jsfiddle.net/sunnycpp/ u4vjR / 2 /
在这里,我已经创建的处理灭指令。
ctrl.directive('handleDestroy',函数(){
返回功能(范围,tElement,属性){
(范围。在$('$破坏',功能){
警报(在毁灭:+ scope.todo.text);
});
};
});Provide an example of scope's $destroy event? Here is reference documentation from http://docs.angularjs.org/api/ng.$rootScope.Scope#$destroy
$destroy()
Removes the current scope (and all of its children) from the parent scope. Removal implies that calls to $digest() will no longer propagate to the current scope and its children. Removal also implies that the current scope is eligible for garbage collection.
The $destroy() is usually used by directives such as ngRepeat for managing the unrolling of the loop.
Just before a scope is destroyed a $destroy event is broadcasted on this scope. Application code can register a $destroy event handler that will give it chance to perform any necessary cleanup.
解决方案Demo: http://jsfiddle.net/sunnycpp/u4vjR/2/
Here I have created handle-destroy directive.
ctrl.directive('handleDestroy', function() { return function(scope, tElement, attributes) { scope.$on('$destroy', function() { alert("In destroy of:" + scope.todo.text); }); }; });
这篇关于提供范围的破坏$事件的例子吗?的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!