How to use “require” dynamically in javascript?
I have a javascript function in "sample.js" file. It is like this:
var mapDict = { '100': 'test_100.js', '200': 'test_200_API.js', '300': 'test_300_API.js' }
function mapAPI()
{
this.version = 0.1;
}
mapAPI.prototype.getFileName = function( id ) {
return mapDict[id]
}
module.exports = mapAPI;
in another file named "institute.js" I want to require the above "test_xxx_API" files dynamically. I have the following code:
const mapAPI = require('../../sample.js');
const map = new mapAPI();
const mapFile = map.getFileName("100");
var insAPI = require(mapFile);
When I run this code by "node institute.js" command, I get the following error:
Error: Cannot find module './test_100_API.js'.
But the "test_100_API.js" file exists and is located in the current folder besides "institute.js". When I changed var insAPI = require(mapFile); to var insAPI = require("./test_100_API.js"); and give it the exact path instead of dynamic path, it works fine. Can anyone help me?
Thanks in advance
javascript node.js require
edited Nov 14 '18 at 18:25
extempl
1,3511127
asked Nov 14 '18 at 18:01
we.arewe.are
628
add a comment |
I have a javascript function in "sample.js" file. It is like this:
var mapDict = { '100': 'test_100.js', '200': 'test_200_API.js', '300': 'test_300_API.js' }
function mapAPI()
{
this.version = 0.1;
}
mapAPI.prototype.getFileName = function( id ) {
return mapDict[id]
}
module.exports = mapAPI;
in another file named "institute.js" I want to require the above "test_xxx_API" files dynamically. I have the following code:
const mapAPI = require('../../sample.js');
const map = new mapAPI();
const mapFile = map.getFileName("100");
var insAPI = require(mapFile);
When I run this code by "node institute.js" command, I get the following error:
Error: Cannot find module './test_100_API.js'.
But the "test_100_API.js" file exists and is located in the current folder besides "institute.js". When I changed var insAPI = require(mapFile); to var insAPI = require("./test_100_API.js"); and give it the exact path instead of dynamic path, it works fine. Can anyone help me?
Thanks in advance
javascript node.js require
edited Nov 14 '18 at 18:25
extempl
1,3511127
asked Nov 14 '18 at 18:01
we.arewe.are
628
where in the disk are these dynamic files found, you nee dto include the full path, for examplerequire(__dirname+mapFile);if on same folder else find the path they are under NOT just the filename the WHOLE path.
– Nikos M.
Nov 14 '18 at 18:05
3
then use thisrequire('./'+mapFile);
– Nikos M.
Nov 14 '18 at 18:17
They are on the same folder. My problem is that when I usevar insAPI = require(mapFile)and printsmapFilevalue it is exactly prints./test_100_API.js' in the console. My code works correctly withvar insAPI = require("./test_100_API.js")` but gives me error withvar insAPI = require(mapFile);. This is the strange part.
– we.are
Nov 15 '18 at 13:15
add a comment |
I have a javascript function in "sample.js" file. It is like this:
var mapDict = { '100': 'test_100.js', '200': 'test_200_API.js', '300': 'test_300_API.js' }
function mapAPI()
{
this.version = 0.1;
}
mapAPI.prototype.getFileName = function( id ) {
return mapDict[id]
}
module.exports = mapAPI;
in another file named "institute.js" I want to require the above "test_xxx_API" files dynamically. I have the following code:
const mapAPI = require('../../sample.js');
const map = new mapAPI();
const mapFile = map.getFileName("100");
var insAPI = require(mapFile);
When I run this code by "node institute.js" command, I get the following error:
Error: Cannot find module './test_100_API.js'.
But the "test_100_API.js" file exists and is located in the current folder besides "institute.js". When I changed var insAPI = require(mapFile); to var insAPI = require("./test_100_API.js"); and give it the exact path instead of dynamic path, it works fine. Can anyone help me?
Thanks in advance
javascript node.js require
edited Nov 14 '18 at 18:25
extempl
1,3511127
asked Nov 14 '18 at 18:01
we.arewe.are
628
I have a javascript function in "sample.js" file. It is like this:
var mapDict = { '100': 'test_100.js', '200': 'test_200_API.js', '300': 'test_300_API.js' }
function mapAPI()
{
this.version = 0.1;
}
mapAPI.prototype.getFileName = function( id ) {
return mapDict[id]
}
module.exports = mapAPI;
in another file named "institute.js" I want to require the above "test_xxx_API" files dynamically. I have the following code:
const mapAPI = require('../../sample.js');
const map = new mapAPI();
const mapFile = map.getFileName("100");
var insAPI = require(mapFile);
When I run this code by "node institute.js" command, I get the following error:
Error: Cannot find module './test_100_API.js'.
But the "test_100_API.js" file exists and is located in the current folder besides "institute.js". When I changed var insAPI = require(mapFile); to var insAPI = require("./test_100_API.js"); and give it the exact path instead of dynamic path, it works fine. Can anyone help me?
Thanks in advance
javascript node.js require
javascript node.js require
edited Nov 14 '18 at 18:25
extempl
1,3511127
asked Nov 14 '18 at 18:01
we.arewe.are
628
edited Nov 14 '18 at 18:25
extempl
1,3511127
asked Nov 14 '18 at 18:01
we.arewe.are
628
edited Nov 14 '18 at 18:25
extempl
1,3511127
edited Nov 14 '18 at 18:25
extempl
1,3511127
edited Nov 14 '18 at 18:25
extempl
1,3511127
1,3511127
asked Nov 14 '18 at 18:01
we.arewe.are
628
asked Nov 14 '18 at 18:01
we.arewe.are
628
asked Nov 14 '18 at 18:01
we.arewe.are
628
628
where in the disk are these dynamic files found, you nee dto include the full path, for examplerequire(__dirname+mapFile);if on same folder else find the path they are under NOT just the filename the WHOLE path.
– Nikos M.
Nov 14 '18 at 18:05
3
then use thisrequire('./'+mapFile);
– Nikos M.
Nov 14 '18 at 18:17
They are on the same folder. My problem is that when I usevar insAPI = require(mapFile)and printsmapFilevalue it is exactly prints./test_100_API.js' in the console. My code works correctly withvar insAPI = require("./test_100_API.js")` but gives me error withvar insAPI = require(mapFile);. This is the strange part.
– we.are
Nov 15 '18 at 13:15
add a comment |
where in the disk are these dynamic files found, you nee dto include the full path, for examplerequire(__dirname+mapFile);if on same folder else find the path they are under NOT just the filename the WHOLE path.
– Nikos M.
Nov 14 '18 at 18:05
3
then use thisrequire('./'+mapFile);
– Nikos M.
Nov 14 '18 at 18:17
They are on the same folder. My problem is that when I usevar insAPI = require(mapFile)and printsmapFilevalue it is exactly prints./test_100_API.js' in the console. My code works correctly withvar insAPI = require("./test_100_API.js")` but gives me error withvar insAPI = require(mapFile);. This is the strange part.
– we.are
Nov 15 '18 at 13:15
where in the disk are these dynamic files found, you nee dto include the full path, for example
require(__dirname+mapFile); if on same folder else find the path they are under NOT just the filename the WHOLE path.– Nikos M.
Nov 14 '18 at 18:05
where in the disk are these dynamic files found, you nee dto include the full path, for example
require(__dirname+mapFile); if on same folder else find the path they are under NOT just the filename the WHOLE path.– Nikos M.
Nov 14 '18 at 18:05
3
3
then use this
require('./'+mapFile);– Nikos M.
Nov 14 '18 at 18:17
then use this
require('./'+mapFile);– Nikos M.
Nov 14 '18 at 18:17
They are on the same folder. My problem is that when I use
var insAPI = require(mapFile) and prints mapFile value it is exactly prints ./test_100_API.js' in the console. My code works correctly with var insAPI = require("./test_100_API.js")` but gives me error with var insAPI = require(mapFile);. This is the strange part.– we.are
Nov 15 '18 at 13:15
They are on the same folder. My problem is that when I use
var insAPI = require(mapFile) and prints mapFile value it is exactly prints ./test_100_API.js' in the console. My code works correctly with var insAPI = require("./test_100_API.js")` but gives me error with var insAPI = require(mapFile);. This is the strange part.– we.are
Nov 15 '18 at 13:15
add a comment |
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where in the disk are these dynamic files found, you nee dto include the full path, for example
require(__dirname+mapFile);if on same folder else find the path they are under NOT just the filename the WHOLE path.– Nikos M.
Nov 14 '18 at 18:05
3
then use this
require('./'+mapFile);– Nikos M.
Nov 14 '18 at 18:17
They are on the same folder. My problem is that when I use
var insAPI = require(mapFile)and printsmapFilevalue it is exactly prints./test_100_API.js' in the console. My code works correctly withvar insAPI = require("./test_100_API.js")` but gives me error withvar insAPI = require(mapFile);. This is the strange part.– we.are
Nov 15 '18 at 13:15