JavaScript Questions

array-like-objects.js

// Why would you need this?
function hasHair () {
  var args = Array.prototype.slice.call( arguments );
}

function-declarations-vs-expressions.js

// What output values do these console.log statements give you?

console.log( typeof isAwesome );
console.log( typeof lovesJava );
console.log( typeof isHired );

function isAwesome () { return true; }
window.lovesJava = function () { return false; };
var isHired = function () { return true; };

function-hoisting.js

// What is the result of the invocation of sayHi within the greeting function?
// Why?
function greeting () {
  
  sayHi( "Paul" );
  
  return;
  
  function sayHi ( name ) {
    console.log( "Hi", name );
  }
  
}

JavaScript Questions

A series of JavaScript related questions to be used during technical interviews.

this-context.js

function isAwesome () {
  console.log( this ); 
}

var Person = function () {
  console.log( this );
};

var obj = {};

// What is the context of `this` in the following scenarios?
var jon = Person();

var terence = new Person();

isAwesome();

isAwesome.bind( obj )();

isAwesome.call( obj );

isAwesome.apply( this );