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ng-staticize

v0.1.0

Published

Staticize your angular template. Zero watcher and fast as template engine.

Downloads

6

Readme

Introduce

ng-staticize是一个把Angular模板静态化的一个directive,适用在一些性能敏感的场景。在Angular模板静态化之后,Angular的watcher数量会显著降低,渲染速度(在数据量较大的情况下)在IE8上会有10-20x的性能提升。

从降低Angular watcher的角度来看,ng-staticize是一个与bindonce类似的项目,区别在于ng-staticize无需改变模板中directive的定义。

你可以花几分钟查看这个例子来看一下ng-staticize带来的性能提升,在IE8或者Firefox下测试会看到更明显的效果。

从设计之初,ng-staticize就存在以下缺陷,请知悉:

  1. 模板中不能使用directive兼容列表以外的directive。
  2. 渲染出的DOM不再动态,即在Controller中的数据变更后,应用了ng-staticize的区域不会重新渲染。不过你可以为ng-staticize指定一个表达式,在表达式变更后ng-staticize会重新渲染。

以下是ng-staticize适用场景:

  1. 页面动态渲染比较少,类似于静态页面,只是使用了Angular的模板来描述数据绑定。
  2. 页面中需要渲染的数据较多,需要做性能优化。

如果你对ng-staticize的实现细节感兴趣,你可以阅读这篇文档

Usage

Install

如果你使用browerify或者web pack,可以使用npm来安装ng-staticize:

npm install ng-staticize —save

如果没有使用npm,则可以下载项目后,在项目中引用dist下的ng-staticize.js。

Include ngStaticize

angular.module('demo', [ 'ngStaticize' ]);

Use

如果只是想把页面中的某一个页面中的某个区域进行静态化操作,只需要为这个区域的元素添加一个属性:ng-staticize。

<div ng-staticize>...</div>

如果需要在某些数据变更之后重新渲染这块区域,为ng-staticize属性赋值,该值是一个表达式,在该表达式变更之后这个区域会重新渲染。比如在scope中的todos属性发生了变化之后重新渲染,则这么定义:

<div ng-staticize="todos">...</div>

如果需要兼容低版本浏IE览器(IE8、IE9),请不要在table、tbody、tfoot、thead、title、tr等元素上使用ng-staticize,原因见此文章

Compatible Directive

ng-staticize只兼容了一些常见的Directive,列表如下:

  • ng-if
  • ng-repeat
  • ng-style
  • ng-class
  • ng-show
  • ng-hide
  • ng-html
  • ng-bind
  • ng-text
  • ng-src
  • ng-href
  • ng-alt
  • ng-title
  • ng-id
  • ng-disabled
  • ng-value

Fork

如果你想修改ng-staticize的代码,在项目文件夹下执行这两个命令:

npm install
npm run dev

License

MIT