How do I export an array with module.exports in node js?
You'd want to define a function which returns the randomized portion of the array:
module.exports = {
getRArray: function() {
var arrays = [];
arrays[0] = 'array 0';
arrays[1] = 'array 1';
arrays[2] = 'array 2';
arrays[3] = 'array 3';
arrays[4] = 'array 4';
return arrays[Math.floor(Math.random()*arrays.length)];
}
};
Also you should embed the array into the function so it actually returns something.
module.exports
needs to be an object.
Perhaps you're looking for something more like:
var arrays = [];
arrays[0] = 'array 0';
arrays[1] = 'array 1';
arrays[2] = 'array 2';
arrays[3] = 'array 3';
arrays[4] = 'array 4';
var r_array = arrays[Math.floor(Math.random()*arrays.length)].toString();
module.exports = r_array;
Please note that this code will only be run once, and that if you're hoping to get a different random value by executing the code multiple times, that you may want to set it up more like:
module.exports = function() {
return arrays[Math.floor(Math.random()*arrays.length)];
}
so that the Math.random()
operation happens over and over.
You have two files, one is array.js and the other app.js. Consider doing this in array.js file:
const Array= [
'array 0',
'array 1',
'array 2',
'array 3',
'array 4']
exports.Array = Array
Now in your app.js do the following:
const { Array } = require("./array")
const randomArr = Array[Math.floor(Math.random()*Array.length)]
console.log(randomArr)
// I used randomArr instead of r_array because of JS conventions.