Gulp

• browser-sync && sass

var gulp = require('gulp');
var browserSync = require('browser-sync');
var sass = require('gulp-sass');

gulp.task('browser-sync',function(){
  browserSync.init({
    server: {
      baseDir: './' 
    } 
  });
  gulp.watch('scss/*.scss',['sass']);
  gulp.watch('./*.html').on('change',browserSync.reload);
});

gulp.task('sass',function(){
  return gulp.src('scss/*.scss')
             .pipe(sass().on('error',sass.logError)) //解决sass出错程序终止问题
             .pipe(gulp.dest('css'))
             .pipe(browserSync.stream());
});

gulp.task('default',['browser-sync']);