Dynamic method call from object in Js

// module one
class TempClass {

  justLog() {
    // do what ever the heck you want...
    console.log('hi there...')
  }
}

module.exports = TempClass

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// module two
const myFreakingTempClass = require('./tmp')

var method = "justLog";
var _instance = new myFreakingTempClass();

_instance[method]()



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// just for grasping the concept up there...
// precomputed property name concept in nutshell...
const _obj = {
  name: 'my name',
  "tmp Val": 'wassap',
  "pre computed": 'third value'
}

console.log(_obj.name)
console.log(_obj['tmp Val'])

const pre = 'pre'
const compute = 'computed'
const _val = `${pre} ${compute}`
console.log(_obj[_val])