How to call function bundled in a file generated through browserify in browser
I am new to nodejs and browserify. I started with this link .
I have file main.js which contains this code
var unique = require('uniq');
var data = [1, 2, 2, 3, 4, 5, 5, 5, 6];
this.LogData =function(){
console.log(unique(data));
};
Now I Install the uniq module with npm:
npm install uniq
Then I bundle up all the required modules starting at main.js into a single file called bundle.js with the browserify command:
browserify main.js -o bundle.js
The generated file looks like this:
(function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);throw new Error("Cannot find module '"+o+"'")}var f=n[o]={exports:{}};t[o][0].call(f.exports,function(e){var n=t[o][1][e];return s(n?n:e)},f,f.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})({1:[function(require,module,exports){
var unique = require('uniq');
var data = [1, 2, 2, 3, 4, 5, 5, 5, 6];
this.LogData =function(){
console.log(unique(data));
};
},{"uniq":2}],2:[function(require,module,exports){
"use strict"
function unique_pred(list, compare) {
var ptr = 1
, len = list.length
, a=list[0], b=list[0]
for(var i=1; i<len; ++i) {
b = a
a = list[i]
if(compare(a, b)) {
if(i === ptr) {
ptr++
continue
}
list[ptr++] = a
}
}
list.length = ptr
return list
}
function unique_eq(list) {
var ptr = 1
, len = list.length
, a=list[0], b = list[0]
for(var i=1; i<len; ++i, b=a) {
b = a
a = list[i]
if(a !== b) {
if(i === ptr) {
ptr++
continue
}
list[ptr++] = a
}
}
list.length = ptr
return list
}
function unique(list, compare, sorted) {
if(list.length === 0) {
return []
}
if(compare) {
if(!sorted) {
list.sort(compare)
}
return unique_pred(list, compare)
}
if(!sorted) {
list.sort()
}
return unique_eq(list)
}
module.exports = unique
},{}]},{},[1])
After including bundle.js file into my index.htm page, how do I call logData function ??
By default, browserify doesn't let you access the modules from outside of the browserified code – if you want to call code in a browserified module, you're supposed to browserify your code together with the module. See http://browserify.org/ for examples of that.
Of course, you could also explicitly make your method accessible from outside like this:
window.LogData =function(){
console.log(unique(data));
};
Then you could call LogData() from anywhere else on the page.
The key part of bundling standalone modules with Browserify is the --s option. It exposes whatever you export from your module using node's module.exports as a global variable. The file can then be included in a <script> tag.
You only need to do this if for some reason you need that global variable to be exposed. In my case the client needed a standalone module that could be included in web pages without them needing to worry about this Browserify business.
Here's an example where we use the --s option with an argument of module :
browserify index.js --s module > dist/module.js
This will expose our module as a global variable named module .
Source.
Update: Thanks to @fotinakis. Make sure you're passing --standalone your-module-name . If you forget that --standalone takes an argument, Browserify might silently generate an empty module since it couldn't find it.
Hope this saves you some time.
阅读关于--standalone参数或google“ --standalone umd”的--standalone