gulp常用方法

var gulp=require('gulp'),
    rename=require('gulp-rename'),
    mincss=require('gulp-clean-css'),
    uglify=require('gulp-uglify'),
    watch=require('gulp-watch'),
    del=require('del');

gulp.task('mincss',['clean'],function(){
    return gulp.src('css/**/*.css')
        .pipe(mincss())
        .pipe(rename({suffix:'.min'}))
        .pipe(gulp.dest('outcss'));
});

gulp.task('minjs',function(){
    return gulp.src('test/**/*.js')
        .pipe(uglify())
        .pipe(rename({suffix:'.min'}))
        .pipe(gulp.dest('dist'));
});

gulp.task('watch',function(){
    watch(['css/*.css','test/**/*.js'], function(){
        gulp.start('mincss','minjs');
    });
})

gulp.task('clean',function(cb){
    return del(['outcss/', 'dist/'], cb);
});

gulp.task('default',['clean'],function(){
    gulp.start('watch','mincss','minjs');
})