Reference Multiple Js Files In A Single Line In A Html File
Solution 3:
I use this tool all the time to minify my JS files:
Online Javascript Compression Tool
You can upload multiple files and it will concatenate them into one for you. It also produces smaller filesizes than YUI compressor, and Google's JS compiler most of the time too.
Solution 4:
I am not sure why this hasn't been mentioned yet, but I do suppose this thread is a bit dated. Since I stumbled on this during my search to solve this very problem, I thought I would put a quick write-up about GruntJS here for other newbie JS guys to find.
Essentially, a properly configured Gruntfile.js will be able to perform a variety of tasks around JS including, but not limited to: concatenating files, minifying files, code linting, and much much more.
You can install grunt
on Ubuntu with:
$ sudo apt-get install nodejs
$ sudo npm -g install grunt-cli
$ cd /path/to/my/project
--- Assumming you have a package.json file already in place ---
$ npm install grunt --save-dev
--- Install grunt plugins you wish to use ---
$ npm install grunt-contrib-concat --save-dev
$ npm install grunt-contrib-uglify --save-dev
$ npm install grunt-contrib-jshint --save-dev
$ npm install grunt-contrib-watch --save-dev
On the GruntJS site, there is a pretty good write-up for how to use GruntJS, but here is an example Gruntfile.js that will:
- Lint all the JS files (
app.js
in the current directory and all.js
files in thengmodules
directory). - Concatenate and save the files to
dist/package-name.js
. - Minify the concatenated file and save it to
dist/package-name.min.js
.
Gruntfile.js
:
module.exports = function(grunt) {
grunt.initConfig({
pkg: grunt.file.readJSON('package.json'),
concat: {
options: {
separator: ';'
},
dist: {
src: ['app.js', 'ngmodules/**/*.js'],
dest: 'dist/<%= pkg.name %>.js'
}
},
uglify: {
options: {
banner: '/*! <%= pkg.name %> <%= grunt.template.today("dd-mm-yyyy") %> */\n'
},
dist: {
files: {
'dist/<%= pkg.name %>.min.js': ['<%= concat.dist.dest %>']
}
}
},
jshint: {
files: ['Gruntfile.js', 'app.js', 'ngmodules/**/*.js'],
options: {
// options here to override JSHint defaults
globals: {
jQuery: true,
console: true,
module: true,
document: true
}
}
},
watch: {
files: ['<%= jshint.files %>'],
tasks: ['jshint']
}
});
grunt.loadNpmTasks('grunt-contrib-uglify');
grunt.loadNpmTasks('grunt-contrib-jshint');
grunt.loadNpmTasks('grunt-contrib-watch');
grunt.loadNpmTasks('grunt-contrib-concat');
grunt.registerTask('default', ['jshint', 'concat', 'uglify']);
};
Solution 5:
There is also Gulp (http://gulpjs.com/), which can be used with various plugins. Here's an example that concatenates *.js files in one single file (main.js), then renames the resulting file and finally minifies it:
var gulp = require('gulp'),
rename = require('gulp-rename'),
uglify = require('gulp-uglify'),
concat = require('gulp-concat');
gulp.task('scripts', function(){
return gulp.src('./src/js/*.js')
.pipe(concat('main.js'))
.pipe(rename({suffix: '.min'}))
.pipe(uglify())
.pipe(gulp.dest('./src/js/*.js'));
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