AngularJS指令的预链接和后链接功能可以自定义吗? [英] Can AngularJS directive pre-link and post-link functions be customized?

问题描述

在有关AngularJS的文献中，我已经看到了很多有关AngularJS 链接前和链接后功能的信息.

I have seen many references to AngularJS pre- and post-link functions in literature about AngularJS.

但是我不确定它们是否可以定制或是否在框架内部.

I am not sure however whether these can be customized or are internal to the framework.

换句话说，作为AngularJS开发人员，我可以为自己的自定义指令提供我自己的前后链接功能吗?

In other words, as an AngularJS developper, can I provide my own pre and post link functions to my custom directives?

推荐答案

是的，按照@Mikke的回答.总结起来，有四种声明链接函数的方法:

Yes you can, as per @Mikke's answer. To sum up, there are four ways to declare linking functions:

1. 从compile内部明确指定preLink和postLink函数:

1. From within compile specifying both preLink and postLink functions explicitly:

compile: function compile(tElement, tAttrs, transclude) {
  return {
    pre: function preLink(scope, iElement, iAttrs, controller) { ... },
    post: function postLink(scope, iElement, iAttrs, controller) { ... }
  }
}

从compile内部仅隐式返回postLink:

From within compile returning only postLink implicitly:

compile: function compile(tElement, tAttrs, transclude) {
  return function postLink( ... ) { ... }
}

从link内部明确指定preLink和postLink:

From within link specifying both preLink and postLink explicitly:

link: {
  pre: function preLink(scope, iElement, iAttrs, controller) { ... },
  post: function postLink(scope, iElement, iAttrs, controller) { ... }
}

从隐式使用postLink的link开始:

From withing link using postLink implicitly:

link: function postLink( ... ) { ... }

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