How to access/get the variable from one javascript file to another javascript file. like first.js contains a function first.js like below.
this.first = function(){
var x = ['new','old']
}
now, I want to access the 'x' in another file say second.js I have tried
var first = require('../first.js'); //path to the first.js file
console.log(first.x)
but getting the undefined value. i want to get/access the 'x' from first.js I am using this for protractor E2E testing using page objects.
It doesn't matter on which js files the functions / variables are. After they are parsed, they all belong to the same window.
You get undefined when accessing x property because it is private. x exists only in the local scope of first function.
Here is an example of how you can get access to x.
var first = (function () {
// private variables / functions
var x = ['new', 'old'];
// public properties (properties of "first")
return {
getX: function () {
return x; // x.slice(0); if you want to send a copy of the array
}
}
}());
The module loading system in node.js require you to use module.exports to expose your data types you want to share:
Your example would be re-written as follows:
// first.js
module.exports = {
x : 'Something here',
y : 'another item'
};
then on the other file
var first = require('../first.js'); //path to the first.js file
console.log(first.x)
See more details on Node.js module loading system