JAVASCRIPT EVALUATION EXAM 2026/2027 QUESTIONS
AND SOLUTIONS RATED A+
✔✔childNodes - ✔✔It looks like an array but it's not. It's a collection - a special array-
like iterable object
✔✔ What must a variable begin with? - ✔✔A letter, $ or _
✔✔What is a variable? - ✔✔Container for a piece of data
✔✔Are variables case sensitive? - ✔✔Yes
✔✔How do you declare variables? - ✔✔using the var keyword - eg. var
myName="Monica";
✔✔What will an undeclared variable return? - ✔✔Undefined
✔✔Two types of variable scope? - ✔✔Local and Global
✔✔What are the properties of a Local Scope? - ✔✔Within a function, only available
within function
✔✔What are the properties of Global Scope? - ✔✔Outside a function, available to any
code outside that function (also within).
✔✔What is Variable "Hoisting"? - ✔✔Variables are hoisted to the top of the
function/statement. It is useful because you can refer to variables declared later in the
code.
✔✔What is best practice regarding variable declarations? - ✔✔Put variable declarations
as close to the top of the scope as possible.
✔✔Prototype Based - ✔✔Each object has a prototype that it inherits properties and
abilities from
✔✔Dynamic Typing - ✔✔Dynamic if the type of variable is interpreted at runtime.
✔✔First Class Function - ✔✔Treats functions as first class citizens - you can do with
functions everything you can do with other elements.
✔✔Multi Paradigm Language - ✔✔Supports more than one programming paradigm -
developers can work with a variety of styles within javascript.
✔✔DOM - ✔✔Document Object model.
, ✔✔What is DOM? - ✔✔Representation of HTML Page....
✔✔What are the two ways to add JS to your site? - ✔✔Internally and Externally.
✔✔How do you add JS To your site internally? - ✔✔Internally using html
<script></script> tag. Best practice to place it before closing body tag .
✔✔How do you add JS to your site externally? - ✔✔Add by externally linking to .js files.
✔✔Is JS case sensitive? - ✔✔Yes
✔✔JS Statement - ✔✔A command that tells the browser what to do.
document.write("hello world");
var myName="lorna";
✔✔Can a statement be grouped into useable blocks called functions? - ✔✔Yes.
✔✔Datatypes - ✔✔Numbers, Strings, Boolean, Arrays, Objects.
✔✔What are the 2 types of Numbers within Datatypes? - ✔✔Integer: Whole Number (-
1, 450)
Float:Decimal Point (0.1, 12.454)
✔✔What are Strings within Datatypes? - ✔✔A line of text: "frog", "a red truck"
✔✔What kind of value does Boolean take? - ✔✔True or False
✔✔What is an Array? - ✔✔Used to store multiple values in a single variable.
Real ["blue", "5", "123456"]
Refer to the whole array using its variable name
Arrays are indexed from 0
✔✔Objects - ✔✔Custom datatypes with properties and actions
✔✔Operators - ✔✔Used to assign values to variables and perform mathematical
operations on them
✔✔Math Based Operators - ✔✔
✔✔Comparison Operators - ✔✔
AND SOLUTIONS RATED A+
✔✔childNodes - ✔✔It looks like an array but it's not. It's a collection - a special array-
like iterable object
✔✔ What must a variable begin with? - ✔✔A letter, $ or _
✔✔What is a variable? - ✔✔Container for a piece of data
✔✔Are variables case sensitive? - ✔✔Yes
✔✔How do you declare variables? - ✔✔using the var keyword - eg. var
myName="Monica";
✔✔What will an undeclared variable return? - ✔✔Undefined
✔✔Two types of variable scope? - ✔✔Local and Global
✔✔What are the properties of a Local Scope? - ✔✔Within a function, only available
within function
✔✔What are the properties of Global Scope? - ✔✔Outside a function, available to any
code outside that function (also within).
✔✔What is Variable "Hoisting"? - ✔✔Variables are hoisted to the top of the
function/statement. It is useful because you can refer to variables declared later in the
code.
✔✔What is best practice regarding variable declarations? - ✔✔Put variable declarations
as close to the top of the scope as possible.
✔✔Prototype Based - ✔✔Each object has a prototype that it inherits properties and
abilities from
✔✔Dynamic Typing - ✔✔Dynamic if the type of variable is interpreted at runtime.
✔✔First Class Function - ✔✔Treats functions as first class citizens - you can do with
functions everything you can do with other elements.
✔✔Multi Paradigm Language - ✔✔Supports more than one programming paradigm -
developers can work with a variety of styles within javascript.
✔✔DOM - ✔✔Document Object model.
, ✔✔What is DOM? - ✔✔Representation of HTML Page....
✔✔What are the two ways to add JS to your site? - ✔✔Internally and Externally.
✔✔How do you add JS To your site internally? - ✔✔Internally using html
<script></script> tag. Best practice to place it before closing body tag .
✔✔How do you add JS to your site externally? - ✔✔Add by externally linking to .js files.
✔✔Is JS case sensitive? - ✔✔Yes
✔✔JS Statement - ✔✔A command that tells the browser what to do.
document.write("hello world");
var myName="lorna";
✔✔Can a statement be grouped into useable blocks called functions? - ✔✔Yes.
✔✔Datatypes - ✔✔Numbers, Strings, Boolean, Arrays, Objects.
✔✔What are the 2 types of Numbers within Datatypes? - ✔✔Integer: Whole Number (-
1, 450)
Float:Decimal Point (0.1, 12.454)
✔✔What are Strings within Datatypes? - ✔✔A line of text: "frog", "a red truck"
✔✔What kind of value does Boolean take? - ✔✔True or False
✔✔What is an Array? - ✔✔Used to store multiple values in a single variable.
Real ["blue", "5", "123456"]
Refer to the whole array using its variable name
Arrays are indexed from 0
✔✔Objects - ✔✔Custom datatypes with properties and actions
✔✔Operators - ✔✔Used to assign values to variables and perform mathematical
operations on them
✔✔Math Based Operators - ✔✔
✔✔Comparison Operators - ✔✔
