Javascript Operator

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ATTENDANCE

ATTENDANCE

Rules and
Regulation

"Rules exist for a reason. Rules
exist because when people
don't follow them, people get
hurt."
Ally Carter

"Rules exist for a reason. Rules
exist because when people
don't follow them, people get
hurt."
Ally Carter

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COMPUTER Technology

Why it is

necessary to use

a variable in
Javascript?

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ESSENTIAL QUESTION

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1. I can identify what are variables in Javascript. (A)
2. I can use variables to store information using
Javascript. (T)
3. I can create a website that will use the input process
in Javascript. (T)
4.I can identify Boolean data types. (A)
5.I understand how to use Boolean data types to
make programs more realistic. (A)
6.I can create a Boolean variable to represent a yes/no
value. (T)

LEARNING TARGETS

COMPUTER Technology

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How do we tell Javascript that
we're working with a variable?

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var x = 10;

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Choose the correct keyword to
declare a variable and assign

the value 24.

____ my number = ____

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REVIEW

Which of these characters can we

use to start a variable?

Numbers
Mathematical
Operators
Underscore Sign(_) Letters

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To create a string, we need to put

the text inside

<string> </string>

Quotation Marks

/Symbol

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JAVASCRIPT COMMENTS

Any code after a double slash //, or between /*

and */, is treated as a comment and will be

ignored, and not executed.

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MULTIPLE LINE COMMENTS

To create a multi-line comment, we write it

between /*and */

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What does a single-line

comment look like?

// This is a comment

**This is a comment

<!--This is a comment-->

%%This is a comment

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REVIEW

What is the output of this code?

//var x = 8;
var x = 2;
// var x = 9;

document.write(x);

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DATA TYPES

NUMBERS

CHECK

Fill in the blanks to declare a variable age

and assign it the number 18.

var
=

;

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DATA TYPES

STRINGS

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DATA TYPES

STRINGS

backslash (\) escape character

When you need to put quotes within string.

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Which of the following is the

escape character?

\

"

/

/*

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DATA TYPES

BOOLEANS

TRUE OR FALSE

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ARITHMETIC OPERATOR

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What will the following

statements display?

Test

5+7

12

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var test = 5+7;

document.write(test);

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What character do we use for

Multiplication?

x

&

*

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What character do we use for

Division?

/

-

÷

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COMPARISON OPERATOR

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We can use comparison operators in

logical statements to find out if variables

or values are different or the same.

Output =TRUE or FALSE

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COMPARISON OPERATOR

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COMPARISON OPERATOR

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COMPARISON OPERATOR

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CODING School

RESET ACCOUNT PASSWORD

HARDWARE

Write a program that takes old and new passwords as inputs and
outputs to the console the Boolean value (true or false) that shows
whether or not they match.

Sample Inputs

erika@zobel123
erika@zobel123

Sample Outputs
TRUE

PRACTICE

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BOOLEAN OPERATOR

COMPUTER Technology

Also known as Logical Operator and it

evaluates an expression.

Output =TRUE or FALSE

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BOOLEAN OPERATOR

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BOOLEAN OPERATOR

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BOOLEAN OPERATOR

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ACTIVITY 2

HARDWARE

You go to the grocery store if you are hungry or need food, and
you have enough gas in the car.
A self-describing car will turn right if there are no people in the
crosswalk and you have enough speed.
In order to make cookies, you need to have white or brown sugar,
eggs, flour, and all ingredients need to be fresh with no mold.
You decide to swim in the water if either the air or water
temperature is warm, or you have a wetsuit available.

Take the below statements and write them as Boolean expressions.
You can create whatever Boolean variables you need.

PRACTICE