Twitter推出的Bootstrap能够帮忙Web前端开发者摆脱这种重复劳动。Web前端开发者每天都与HTMLCSSJavaScript打交道。
Bootstrap前史为了应对杂乱的需求，前期的Twitter前端工程师在开发网站时简直采用了一切自个了解的前端库。造成了网站保护艰难、拓展性不强、开发本钱高级疑问。此刻BootStrap被提上了日程。Twitter需求前端工程师完全依托这一单一构造进行前端开发。
Twitter2011年8月将其开源，并在2012年2月3日发布了2.0版。GitHub上，这个项目已有拥超越2万位重视者和4000个分支。Bootstrap规划者、闻名前端工程师MarkOtto这样写道：Bootstrap和JacobThornton编写的一个前端工具箱，目的为了帮忙规划师和Web前端开发人员疾速有效地创建一个构造简略、功用优良、页面精美的Web运用。运用了最新的浏览器技能，能够供给精美的页面排版办法以及表单、按钮、表格、网格栅格化、导航等许多元素。个性，任何开发团队都能运用它供给的HTML模板、CSS款式和jQueri组件来布署或许重建一个外观漂亮的页面运用
。BootStrap2新特性BootStrap2原有特性的基础上侧重改进了用户的体会和交互性，比如新增加的媒体展现功用，适用于智能手机上多钟屏幕规格的呼应式规划，别的新增了12款jQueri插件，能够满意Web页面常用的用户体会和交互功用。
BootStrap2运用Bootstrap文件构造读 者能够直接从GitHub下载到Bootstrap源码，外地解压后能够看到这样的目录构造：docimgjquery-ui-bootstrapjs和less其间最为首要的doc下的CSS款式文件，less中的编译文件和“js下的jQueri插件。 Bootstrap设备关于怎么运用获取进入的文件大致有两步：第一是怎么设备Bootstrap根本款式，第二是怎么调用BootstrapjQueri插件，首要来看款式的设备。款式的设备有多种办法，图1展现的一种常用的调用款式办法“linkBootStrap:前端构造
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