Unit 19 by shyni

Objective

shyni123 — 2020-09-08 05:53:31 UTC

Lesson 1
Assigning and declaring variables and applying operators in a script

Question

shyni123 — 2020-09-08 06:19:47 UTC

Explain a variable and give an eg
List few things you need to remember when defining variables

Question

shyni123 — 2020-09-08 06:38:44 UTC

How do you add a comment

Question

shyni123 — 2020-09-08 06:39:07 UTC

Explain the difference between Alert and document.write

Question

shyni123 — 2020-09-08 06:41:26 UTC

List
Arithmetic operators
Assignment operators
Comparison and logical operators

Jameela

2020-09-09 06:33:37 UTC

A variable refers to something that can hold a data value that can be changed when required (a memory location)
eg : var x = 5;

Serena

2020-09-09 06:33:55 UTC

A variable holds data that can be changed.
Eg: var a =10

Ashish

2020-09-09 06:33:58 UTC

for a single line comment use - // text //
for multi line comment use - /* text */

Amara

2020-09-09 06:34:21 UTC

Variable means anything the can vary. Javacript includes variable which holds the data value and it can be changed anytime. A variable must have a unique name.

Muhammad Yousuf

2020-09-09 06:34:21 UTC

Arithmetic operators include;

+ (Addition),
- (Subtraction),
* (Multiplication),
/ (Division),
% (Modulus),
++ (Increment),
- - (Decrement).

Comparison operators include;

== (Equal),
!= (Not equal),
< (Less than),
<= (Less than or equal),
> (Greater than),
>= (Greater than or equal).

Logical operators include;

&& (Logical "and" evaluates to true when both operands are true),
|| (Logical "or" evaluates to true when either operand is true),
! (Logical "not" evaluates to true if the operand is false).

Iman

2020-09-09 06:34:31 UTC

A variable is a location of memory that can contain a data value.
eg
var y = 6

Amal

2020-09-09 06:35:06 UTC

A variable is a “named storage” for data. We can use variables to store visitors, and other data.

You can assign a value to a variable using equal to (=) operator when you declare it or before using it.

khaled

2020-09-09 06:35:49 UTC

Alert shows an alert box to the user with a message that the user has to press "Ok" to continue using the website.

The document.write prints something directly to the website and don't require user interaction.

Fahad

2020-09-09 06:36:02 UTC

Alert gives you a pop up info box and document.write writes to the webpage.

Saad

2020-09-09 06:37:05 UTC

The basic arithmetic operations are addition, subtraction, multiplication, and division.