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Detailed explanation of examples of bootstrap method introduced by Webpack

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2018-05-25 15:10:244259browse

本篇文章主要介绍了Webpack如何引入bootstrap的方法,小编觉得挺不错的,现在分享给大家,也给大家做个参考。一起跟随小编过来看看吧

【相关视频推荐:Bootstrap教程

Bootstrap中是一种事实上的界面标准,标准到现在的网站大量的使用它。如果可以使用webpack引入的bootstrapcss,就可以一个npm install完成项目的依赖,而不必手工的添加到html内。

本来以为在入口文件内加一行就行:

import 'bootstrap/dist/css/bootstrapcss'

然后安装依赖:

npm i bootstrap url url-loader style-loader css-loader --save

实际上却不是想象的那么简单。因为css文件内还引用了很多类型的字体文件和矢量图文件。要引入它,必须同时提供css之外的类型的对应的loader:

//webpackconfigjs:
moduleexports = {
entry: {
'js'
},
output: {
filename: 'bundlejs'
},
module: {
loaders: [

{ test: /\css$/, loader: 'style-loader!css-loader' },
{ test: /\eot(\?v=\d+\\d+\\d+)?$/, loader: "file" },
{ test: /\(woff|woff2)$/, loader:"url?prefix=font/&limit=5000" },
{ test: /\ttf(\?v=\d+\\d+\\d+)?$/, loader: "url?limit=10000&mimetype=application/octet-stream" },
{ test: /\svg(\?v=\d+\\d+\\d+)?$/, loader: "url?limit=10000&mimetype=image/svg+xml" }
]
}
};

我们在html文件内使用那么一点点的bootstrap:

// chtml
<html>
<body>
<ul class="nav nav-pills">
<li role="presentation" class="active"><a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" >Home</a></li>
<li role="presentation"><a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" >Profile</a></li>
<li role="presentation"><a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" >Messages</a></li>
</ul>
<script type="text/javascript" src="bundlejs"></script>
</body>
</html>

再次执行转译:

webpack

打开浏览器:

open chtml

看到bootstrap那熟悉而太熟悉的界面。

引入jquery

如果需要使用bootstrap的js插件的话,就必须首先引入jquery。引用jquery的一个方法是使用webpack插件。

首先安装jquery:

npm i jquery

其次使用插件装入jquery,方法是修改webpack的配置文件,加入:

plugins: [
new webpackProvidePlugin({
$: "jquery",
jQuery: "jquery"
})
]

在入口文件内加入代码来做验证:

$("body")append("<p>hello world</p>")

如果成功,说明jquery加载成功。这样你就可以在入口js文件内加载bootstrapjs了:

import &#39;bootstrap/dist/js/bootstrapjs&#39;

排除错误

我确实在引入bootstrap的时候,遇到一个神奇的错误。在webpack转译时报错,css-loader,unknown word样子的错误。对webpackconfigjs文件加入一个include属性并指向到不存在的目录即可。

{
test: /\css$/,
include: [
pathresolve(dirname, "not_exist_path")
],
loader: "style!css"
}

原始的issue在此:githubcom/webpack/cs 。我看看看到此答案时以为是个玩笑。

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