We will see how function return function.We can call this function in two way but the second one is better.

script.js

function interviewQuestion(job){
	if(job == 'designer'){
		return function(name){
			console.log(name + 'can you please explain what UI design is?');
		}
	}
	else if(job == 'teacher'){
		return function(name){
			console.log('What subject do you teach,' + name + '?');
		}
	}
	else{
		return function(name){
			console.log('Hello ' + name +'What do you do?');
		}
	}
}
var teacherQuestion = interviewQuestion('teacher');
	teacherQuestion('John')
Alternative way
	interviewQuestion('designer')('Mark');

This code is using closure

function interviewQuestion(job){
			return function(name){
				if(job == 'designer'){
				console.log(name + 'can you please explain what UI design is?');
		}
			else if(job == 'teacher'){
				console.log('What subject do you teach,' + name + '?');
			}
			else{
			console.log('Hello ' + name +'What do you do?');
			}
			}
		 }
		 interviewQuestion('designer')('Mark')