AngularJS 指令前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

我在有关 AngularJS 的文献中看到了许多对 AngularJS 链接前和链接后函数的引用.

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

但是我不确定这些是否可以自定义或在框架内部.

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，我可以为我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，根据 @Mikke 的回答，您可以.总结起来，链接函数的声明方式有四种:

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

1. 从 compile 中明确指定 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 内仅隐式返回 postLink:

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

从 link 中明确指定 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 withing link 使用 postLink 隐式:

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

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