如何在前端项目中引用bootstrap less?
在基于bootstrap css框架的前端项目开发中,如果有grunt build系统,那么工作流是:客制化less,在less中定义自己的
CSS,同时可以随意引用bootstrap中预定义好的css类,一旦保存文件,grunt则开始重新构建,生成最后的生产文件。问题是:
如何能够在自己的客制less文件中引入bootstrap的less变量或者mixin呢?
比如:我如何能够实现在屏幕尺寸在@screen-md时,将所有的图片隐藏呢?
对于这个场景,假设项目目录结构如下:
> bower_components
> bootstrap
> font-awesome
> requirejs
...
> css
- project.css
> less
- project.less
- variables.less
可行的办法为:
1.在project.less中import bootstrap.less,font-awsome,以及自己定义的项目所需less文件:
// Bootstrap framework
@import "../../bower_components/bootstrap/less/bootstrap.less";
// Font-awesome awesomeness
@import "../../bower_components/font-awesome/less/font-awesome.less";
// Project specific stuff
@import "variables.less";
@import "stuff.less";
2.在variables.less文件中一方面定义自己的所需变量,另一方面可以覆盖掉bootstrap的预置变量;
// Override Bootstrap variables
@font-family-sans-serif: "Lucida Grande","Lucida Sans Unicode",Arial,sans-serif;
@btn-default-border: #bbb;
@brand-primary: #b02b2c;
@link-color: #08c;
// Override Font-Awesome variables (path relative to project.css position)
@fa-font-path: "../bower_components/font-awesome/fonts";
//Map Bootstrap variables to myproject specific names
@my-customname-float-breakpoint: @grid-float-breakpoint;
@theme-color: @brand-primary;
//Project specific variables
@my-favourite-color: rgb(228, 1, 1);
3.仅仅编译project.less文件,最后生成一个包罗万象的巨大css文件(注意这里也包含font-awsome)
4.既然在project.less中已经引入了bootstrap.less,那么在后面import的自创less文件自然可以引用任何bootstrap less变量或mixin,比如:
// Hide all images at a viewport smaller than 992px (aka @screen-md)
@media (max-width: @screen-sm-max) {
img {
display: none;
}
}
原文出处:
http://stackoverflow.com/questions/20246514/using-twitter-bootstrap-3-during-development
http://transmission.vehikl.com/using-bootstrap-as-a-semantic-mixin-library/
http://www.helloerik.com/bootstrap-3-less-workflow-tutorial
http://slicejack.com/bootstrap-with-less-workflow/
https://www.npmjs.com/package/grunt-include-bootstrap
http://stackoverflow.com/questions/12655034/how-to-use-bootstrap-and-less-and-keep-a-clean-project