续Gulp使用入门编译Sass
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使用 gulp 编译 Sass
Sass 是一种 CSS 的开发工具,提供了许多便利的写法,大大节省了开发者的时间,使得 CSS 的开发,变得简单和可维护。
安装
npm install gulp-sass (--save-dev) 括号中的可选
基本用法
Something like this will compile your Sass files:
‘use strict‘;
var gulp = require(‘gulp‘);
var sass = require(‘gulp-sass‘);
gulp.task(‘sass‘, function () {
return gulp.src(‘./sass/**/*.scss‘)
.pipe(sass().on(‘error‘, sass.logError))
.pipe(gulp.dest(‘./css‘));
});
gulp.task(‘sass:watch‘, function () {
gulp.watch(‘./sass/**/*.scss‘, [‘sass‘]);
});
这里说下sass({outputStyle: ‘compressed‘})方法里面有四种编译输出形式可以配置
- nested 继承
- compact 紧凑
- expanded 展开
- compressed 压缩
:nested
.widget-social { text-align: right; } .widget-social a, .widget-social a:visited { padding: 0 3px; color: #222222; color: rgba(34, 34, 34, 0.77); } .widget-social a:hover { color: #B00909; }
:expanded
.widget-social { text-align: right; } .widget-social a, .widget-social a:visited { padding: 0 3px; color: #222222; color: rgba(34, 34, 34, 0.77); } .widget-social a:hover { color: #B00909; }
:compact
.widget-social { text-align: right; } .widget-social a, .widget-social a:visited { padding: 0 3px; color: #222222; color: rgba(34, 34, 34, 0.77); } .widget-social a:hover { color: #B00909; }
:compressed
.widget-social{text-align:right}.widget-social a,.widget-social a:visited{padding:0 3px;color:#222222;color:rgba(34,34,34,0.77)}.widget-social a:hover{color:#B00909}
You can also compile synchronously, doing something like this:
‘use strict‘;
var gulp = require(‘gulp‘);
var sass = require(‘gulp-sass‘);
gulp.task(‘sass‘, function () {
return gulp.src(‘./sass/**/*.scss‘)
.pipe(sass.sync().on(‘error‘, sass.logError))
.pipe(gulp.dest(‘./css‘));
});
gulp.task(‘sass:watch‘, function () {
gulp.watch(‘./sass/**/*.scss‘, [‘sass‘]);
});
Options
Pass in options just like you would for node-sass; they will be passed along just as if you were using node-sass. Except for the data option which is used by gulp-sass internally. Using the file option is also unsupported and results in undefined behaviour that may change without notice.
For example:
gulp.task(‘sass‘, function () {
return gulp.src(‘./sass/**/*.scss‘)
.pipe(sass({outputStyle: ‘compressed‘}).on(‘error‘, sass.logError))
.pipe(gulp.dest(‘./css‘));
});
Source Maps
gulp-sass can be used in tandem with gulp-sourcemaps to generate source maps for the Sass to CSS compilation. You will need to initialize gulp-sourcemaps prior to running gulp-sass and write the source maps after.
var sourcemaps = require(‘gulp-sourcemaps‘);
gulp.task(‘sass‘, function () {
return gulp.src(‘./sass/**/*.scss‘)
.pipe(sourcemaps.init())
.pipe(sass().on(‘error‘, sass.logError))
.pipe(sourcemaps.write())
.pipe(gulp.dest(‘./css‘));
});
By default, gulp-sourcemaps writes the source maps inline in the compiled CSS files. To write them to a separate file, specify a path relative to the gulp.dest() destination in the sourcemaps.write() function.
var sourcemaps = require(‘gulp-sourcemaps‘);
gulp.task(‘sass‘, function () {
return gulp.src(‘./sass/**/*.scss‘)
.pipe(sourcemaps.init())
.pipe(sass().on(‘error‘, sass.logError))
.pipe(sourcemaps.write(‘./maps‘))
.pipe(gulp.dest(‘./css‘));
});
最后运行gulp 命令
gulp
[11:32:24] Using gulpfile D:\wamp\www\BootsDataTable\gulpfile.js
[11:32:24] Starting ‘script‘...
[11:32:24] Finished ‘script‘ after 16 ms
[11:32:24] Starting ‘css‘...
[11:32:24] Finished ‘css‘ after 3.66 ms
[11:32:24] Starting ‘images‘...
[11:32:24] Finished ‘images‘ after 1.9 ms
[11:32:24] Starting ‘sass‘...
[11:32:24] Starting ‘auto‘...
[11:32:25] Finished ‘auto‘ after 58 ms
[11:32:25] Starting ‘css‘...
[11:32:25] Finished ‘css‘ after 4.39 ms
[11:32:25] Finished ‘sass‘ after 318 ms
[11:32:25] Starting ‘default‘...
[11:32:25] Finished ‘default‘ after 22 μs
[11:32:25] Starting ‘css‘...
[11:32:25] Finished ‘css‘ after 1.45 ms
[11:32:25] gulp-imagemin: Minified 20 images (saved 12.48 kB - 24.2%)
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