CODEWITHSUNDEEP
javascriptnode.jsreactjs
Akib
Akib

Reputation: 238

call a function with variable name

I want to call function from variable name. My code is in react.js

Function to be called > authentication.signIn()

My code as follows

var authentication = require('authentication.js');
let controller = "authentication";
let operationId = "signIn";
const data = controller.operationId();

Here controller and operationId is dynamic. They will change in the next loop. For an example in the next loop the values of operationId is signOut and controller is authentication. Then function call to const data is as follows

const data = authentication.signOut();

but here the error comes: controller.operationId is not a function.

Upvotes: 2

Views: 1490

Answers (1)

Dimitar Christoff
Dimitar Christoff

Reputation: 26165

you need to have an object to store your controllers and call things from

eg:

const controllers = {}
controllers.authentication = require('authentication')
// more controllers...

// later
const method = 'signIn', controller = 'authentication'
controllers[controller][method]()

same can work for stuff like global object or whatever. you can also wrap this into a function

eg very quickly

controller = (name, method, ...args) =>{
  if (!controllers[name]){ 
    throw `Oh no, unknown controller ${name}`
    return
  }
  controllers[name][method](...args)
}

Upvotes: 2

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