一步步搭建JavaScript框架: Lettuce
最后更新于:2022-04-01 14:08:24
[TOC]
## 概况
### 背景
从开始打算写一个MV*,到一个简单的demo,花了几天的时间,虽然很多代码都是复制/改造过来的,然而**It Works**(nginx的那句话会让人激动有木有)。现在他叫lettuce,代码[https://github.com/phodal/lettuce](https://github.com/phodal/lettuce),如果有兴趣可以加入我们。
虽然js还不够expert,但是开始了。
## 步骤
### Step 1: 注册npm和bower包
一开始我做的3次commits是:
~~~
* e4e6e04 - Add README.md (3 weeks ago) <Fengda HUANG>
* 37411d7 - publish bower (3 weeks ago) <Fengda HUANG>
* aabf278 - init project (3 weeks ago) <Fengda HUANG>
~~~
是的一开始什么也没做,除了从`bower`和`npm`上注册了一个叫做`lettuce`的库:
~~~
{
"name": "lettuce",
"version": "0.0.2",
"authors": [
"Fengda HUANG <h@phodal.com>"
],
"description": "A Mobile JavaScript Framework",
"main": "index.js",
"moduleType": [
"amd",
"node"
],
"keywords": [
"lettuce",
"mobile"
],
"license": "MIT",
"homepage": "http://lettuce.phodal.com",
"private": false,
"ignore": [
"**/.*",
"node_modules",
"bower_components",
"test",
"tests"
]
}
~~~
然后在我们还没有开始写代码的时候版本就已经是`0.0.2`这个速度好快。。总结如下:
* 取一个好的名字
* 在npm和bower上挖一个坑给自己
* 开始写README.md
所以我的`README.md`是这样子的
~~~
#Lettuce
> A is Mobile JavaScript Framework
Coming soon
~~~
是的,我们的代码已经`Coming soon`了。
### Step 2: 生成Javascript项目框架
为了简化这一个痛苦的过程,我们还是用yeoman。
#### 安装Yeoman lib生成器
1.安装yeoman
~~~
npm install -g yo
~~~
2.安装generator-lib
~~~
npm install -g generator-lib
~~~
3.创建项目
~~~
mkdir ~/lettuce && cd $_
yo lib
~~~
接着我们就迎来了
~~~
_-----_
| |
|--(o)--| .--------------------------.
`---------´ | Welcome to Yeoman, |
( _´U`_ ) | ladies and gentlemen! |
/___A___\ '__________________________'
| ~ |
__'.___.'__
´ ` |° ´ Y `
[?] What do you want to call your lib? Lettuce
[?] Describe your lib: A Framework for Romantic
[?] What is your GitHub username? phodal
[?] What is your full name? Fengda Huang
[?] What year for the copyright? 2015
~~~
省略上百字,你的目录里就会有
~~~
.
|____.editorconfig
|____.gitattributes
|____.gitignore
|____.jshintrc
|____bower.json
|____demo
| |____assets
| | |____main.css
| | |____normalize.css
| |____index.html
|____dist
| |____Lettuce.js
| |____Lettuce.min.js
|____docs
| |____MAIN.md
|____Gruntfile.js
|____index.html
|____LICENSE.txt
|____package.json
|____README.md
|____src
| |_____intro.js
| |_____outro.js
| |____main.js
|____test
| |____all.html
| |____all.js
| |____lib
| | |____qunit.css
| | |____qunit.js
~~~
这么多的文件。
#### Build JavaScript项目
于是我们执行了一下
~~~
grunt
~~~
就有了这么多的log:
~~~
Running "concat:dist" (concat) task
File "dist/Lettuce.js" created.
Running "jshint:files" (jshint) task
>> 1 file lint free.
Running "qunit:files" (qunit) task
Testing test/all.html .OK
>> 1 assertions passed (20ms)
Running "uglify:dist" (uglify) task
File "dist/Lettuce.min.js" created.
Done, without errors.
~~~
看看我们的Lettuce.js里面有什么
~~~
(function(root, undefined) {
"use strict";
/* Lettuce main */
// Base function.
var Lettuce = function() {
// Add functionality here.
return true;
};
// Version.
Lettuce.VERSION = '0.0.1';
// Export to the root, which is probably `window`.
root.Lettuce = Lettuce;
}(this));
~~~
我们的库写在[立即执行函数表达式](https://www.phodal.com/blog/javascript-immediately-invoked-function-expression)里面。这样便是和jQuery等库一样了。
grunt里的任务包含了:
* jshint 代码检查
* contact 合并js到一个文件
* minify js 压缩js
* qunit 单元测试
这样我们就可以轻松上路了。
### Step 3: 寻找所需要的函数
### Step 4: 整合
### Step 5: 测试
### 练习建议