什么是用于Angular.noop？ [英] What is Angular.noop used for?

问题描述

十一试图甚至Angular.org文档搜索无处不在，但未能找到任何实施详细的解释。这将是非常有益的，如果任何可以解释的。

XI have tried searching it everywhere even on Angular.org documentation but couldn't find any detailed explanation with implementation. It would be hugely helpful if any could explain it.

推荐答案

angular.noop是可以作为当你需要通过一些函数作为参数占位符一个空函数。

angular.noop is an empty function that can be used as a placeholder when you need to pass some function as a param.

function foo (callback) {
    // Do a lot of complex things

    callback();
}

// Those two have the same effect, but the later is more elegant
foo(function() {});
foo(angular.noop);

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