(function() { 'use strict'; foo = "bar"; })();

The expression (typeof NaN === 'number') evaluates to:

What is the value of x? var x = typeof NaN;

How does JavaScript interpret numeric constants outside of strict mode?

Which is not a reserved word in the language?

var x = {}; var foo = function () { this.hello = 'Hi'; return this; }; x.bar = foo; What is the value of the following code: x.bar().bar().hello;

What will be logged to the console? console.log([0,0,0].fill(1,1) RangeError SyntaxError EvalError

Select statements that will return true. Object is defined: let a = {a:1};

What will the following code snippet log in the console? let arr = [1, 2, 3]; for (i = 0; i < arr.length; arr[i++] = 0) ; console.log(arr);

Which are true about numbers in JavaScript?

What is the super function in the class context?