1。运行效果如图所示
2。实现代码如下
& lt; ! DOCTYPE html> & lt; html> & lt; head> ,,,& lt; meta charset=皍tf - 8”比; ,,,& lt; meta http-equiv=癤-UA-Compatible”,内容=癐E=边缘”比; ,,,& lt; title>进度条——基本样式& lt;/title> ,,,& lt; !——,最新版本的,Bootstrap 核心,CSS 文件,——比; ,,,& lt; link rel=把奖怼? ,,,href=" https://cdn.bootcss.com/bootstrap/3.3.7/css/bootstrap.min.css ", ,,,诚信=皊ha384-BVYiiSIFeK1dGmJRAkycuHAHRg32OmUcww7on3RYdg4Va + PmSTsz/K68vbdEjh5u” ,,,crossorigin=澳涿北? ,,,& lt; !——,可选的,Bootstrap 主题文件(一般不用引入),——比; ,,,& lt; link rel=把奖怼? ,,,href=" https://cdn.bootcss.com/bootstrap/3.3.7/css/bootstrap-theme.min.css ", ,,,诚信=皊ha384-rHyoN1iRsVXV4nD0JutlnGaslCJuC7uwjduW9SVrLvRYooPp2bWYgmgJQIXwl/Sp”, ,,,crossorigin=澳涿北? & lt;/head> & lt; body> ,,,& lt; div 类=敖健北? ,,,,,,,& lt; div 类=敖忍酢?在& lt;/div> ,,,& lt;/div>, ,,,& lt; script src=" https://cdn.bootcss.com/jquery/3.2.1/jquery.min.js "祝辞& lt;/script> ,,,& lt; !——,最新的,Bootstrap 核心,JavaScript 文件,——比; ,,,& lt; script src=" https://cdn.bootcss.com/bootstrap/3.3.7/js/bootstrap.min.js ", ,,,诚信=皊ha384-Tc5IQib027qvyjSMfHjOMaLkfuWVxZxUPnCJA7l2mCWNIpG9mGCD8wGNIcPD7Txa”, ,,,crossorigin=澳涿弊4? lt;/script> & lt;/body> & lt;/html>