How to Bootstrap framework set up incoming links

bootstrap file is divided:

Import rules:

　　One way: can download ---- https://v3.bootcss.com/

(1) Note:

（2）

 

（3）

 

 

　　Note 1: js file bootstrap is dependent on jQuery, so the use of bootstrap need to import jQuery "" "" ":

  　Download: https://jquery.com/

A native import: a layer added directly into path

The second is linked to import :( premise that must have net)

BootCDN>>>>:  https://www.bootcdn.cn/

(1)JQuery

(1) Compact JQuery

 

(2) This is a condensed version of a direct copy min.js

 

 

 

    <!--<script src="https://cdn.bootcss.com/jquery/3.4.1/jquery.min.js"></script>-->
    <!--<link href="https://cdn.bootcss.com/twitter-bootstrap/3.4.1/css/bootstrap.min.css" rel="stylesheet">-->
    <!--<script src="https://cdn.bootcss.com/twitter-bootstrap/3.4.1/js/bootstrap.min.js"></script>-->


下面是本地下载好的文件的导入
    <script src="JQuery-3.4.1.js"></script>
    <link rel="stylesheet" href="bootstrap-3.3.7-dist/css/bootstrap.min.css">
    <script src="bootstrap-3.3.7-dist/js/bootstrap.min.js"></script>