Home » Computer Science » JavaScript » Operators

Maury Hillstrom

Maury Hillstrom

Operators

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Table of Contents

Section 1: JavaScript
Introduction to JavaScript

22m 43s

Intro
0:00
What is JavaScript
0:07
Real Life Example 1
0:28
Real Life Example 2
0:56
Real Life Example 3
1:31
Text Editor
2:20
JavaScript vs. Java
4:54
Is JavaScript the Same as Java?
4:55
JavaScript Comment Syntax
5:51
Comment Syntax
5:52
Viewing a JavaScript File
6:45
Browser
6:46
Source Code
7:34
Text Editor
7:50
Example: Browser
8:28
Example: Simple JavaScript File
9:13
Example: JavaScript File
10:43
Example: Font & JavaScript
12:25
Example: Adding Text Color
13:37
Example: Adding a Break Tag
16:04
Example: Adding User Alert Message
17:48
Example: Adding Multi-Line User Alert Message
19:02
Example: Variable & JavaScript
20:40
Working With JavaScript

27m 5s

Intro
0:00
History of JavaScript
0:14
History of JavaScript
0:15
JavaScript vs. Java
1:16
Differences and Similarities Between JavaScript and Java
1:17
Enabling JavaScript
4:56
Running JavaScript in Browsers
4:58
Allowing Active Content: IE
6:38
How to Allow Active Content in Internet Explorer
6:40
Allowing Active Content: Firefox
7:36
How to Allow Active Content in Firefox
7:37
Allowing Active Content: Safari
7:59
How to Allow Active Content in Safari
8:00
Allowing Active Content: Google Chrome
8:28
How to Allow Active Content in Google Chrome
8:29
Pseudocode
9:09
What is Pseudocode?
10:20
Examples: Pseudocode
10:45
Extra Examples
12:27
Basic Math
13:01
Using System Clock and Comparison Operators
23:08
If Logic

35m 39s

Intro
0:00
The Mighty 'if'
0:11
'If' Statements
0:13
Conditional Statements in JavaScript
4:00
'If' Statement
4:06
'If Else' Statement
4:36
'If Else If Else' Statement
5:29
'Switch' Statement
6:23
Example 1: If Statement
6:47
Example 2: Two If Statements
9:29
Example 3: Multiple If Statements
10:49
Example 4: If Else Statement
14:45
Example 5: If Else If Else Statement
16:32
Example 6: Employee Pay
18:58
Example 7: Random Number Generator
26:36
Example 8: Switch Statement
30:11
Operators

57m 26s

Intro
0:00
Types of Operators
0:09
Operators Overview
0:20
Arithmetic Operators
1:14
Example: Arithmetic Operators
1:15
Arithmetic Rules of Precedence
4:38
PEMDAS (Algebra)
4:59
P (MDR) (AS) (JavaScript)
5:43
Assignment Operators
11:58
Example: Assignment Operators
11:59
Comparison Operators
15:16
Example: Comparison Operators
15:17
Boolean Logical Operators
18:19
&& Operator
18:44
|| Operator
19:47
! Operator
22:04
Special Conditional Operator
22:25
Syntax
22:26
Example
23:17
Increment and Decrement Operators
24:03
Pre-Increment Operator
24:38
Pre-Decrement Operator
25:40
Post-Increment Operator
26:19
Post-Decrement Operator
27:07
Example 1: Modulus Operator
27:53
Example 2: Assignment Operator
32:14
Example 3: Characters and Data Types
37:57
Example 4: Characters and Data Types
43:17
Example 5: Boolean Logical Operators
44:56
Example 6: 'or' Logic
46:43
Example 7: Conditional Operators
49:39
Example 8: Increment and Decrement Operators
52:18
Loops

23m 42s

Intro
0:00
Types of Loops
0:05
For Loop
0:54
While Loop
1:19
Do…While Loop
2:03
For…in Loop
2:48
Main Purpose of Loops
3:57
Example 1: For Loop
4:21
Example 2: For Loop with Total
7:00
Example 3: For Loop in HTML
10:31
Example 4: Reverse For Loop
12:02
Example 5: While Loop
14:08
Example 6: Do While Loop
15:50
Example 7: Break Loop
17:06
Example 8: Late Break Loop
18:42
Example 9: Continue Break Loop
20:05
Example 10: For…in Loop
21:28
Functions

31m 55s

Intro
0:00
Q & A
0:08
Questions and Answers
0:14
Two Main Types of Functions
1:11
JavaScript Library Functions
1:26
Programmer-Defined Functions
1:38
Library Functions
1:55
JavaScript Library Functions
1:56
Examples
2:23
Programmer-Defined Functions
3:01
Procedure
3:02
Programmer-Defined Functions
4:05
Function Definition Syntax
4:10
Example 1: Delayed Function
5:46
Example 2: Squared Numbers
8:15
Example 3: Exponents
12:08
Example 4: One Die
16:13
Example 5: Area of Circle
22:09
Example 6: Area of Circle With Exponent
25:53
Example 7: Temperature Converter
27:21
Events

24m 24s

Intro
0:00
Object-Oriented, Event-Driven Programming
0:08
OBJECT + EVENT = PROGRAM
0:10
Examples of Objects
1:49
Windows/OS Objects
1:52
Examples of Objects
2:48
JavaScript Objects
2:49
Examples of Events
3:19
Mouse Clicks
3:27
Mouse-Overs
3:39
Keystrokes
4:17
Page Loads
4:38
Other User Inputs
5:07
Examples of Programs
5:34
Examples
5:42
Summary
6:41
OBJECT + EVENT = PROGRAM
6:42
Example 1: Graphic Object
7:20
Example 2: Mouse Over Events
10:36
Example 3: X/Y Screen Pixel Coordinates
14:22
Example 4: Keystroke Detector
17:21
Example 5: Event Bubbling
20:51
Error Handling

21m 25s

Intro
0:00
Using Try..Catch to Detect Errors
0:09
What is Handling Errors?
0:23
Try..Catch Syntax
1:22
Throwing Exceptions
2:13
Throw Statement Syntax
2:15
Special Text Characters
2:57
Special Text Characters
2:58
Example 1: Try...Catch
4:51
Example 2: Try…Catch Correction
8:32
Example 3: Try…Catch Redirection
10:53
Example 4: Try Catch Throw
12:14
Example 5: Throwing Errors
18:24
Example 6: Special Characters Error
19:51
Example 7: Special Text Characters
20:38
Objects

26m 15s

Intro
0:00
Definitions
0:08
Objects
0:28
Methods
0:44
Properties
1:01
Example
1:22
String Object
1:26
Test Object
2:15
Common JavaScript Objects
3:10
Array Object
3:25
Boolean Object
3:44
Date Object
3:52
Form Object
4:09
Math Object
4:48
Number object
4:58
String Object
5:27
Window Object
5:32
Document Object
5:48
Regular Expression Objects
5:55
Regular Expression Syntax
5:57
Example 1: Object Method
7:04
Example 2: Object Property
8:41
Example 3: String Object Styles
9:09
Example 4: String Match Method
11:00
Example 5: String Replace Method
12:45
Example 6: Web Page Clock
14:05
Example 7: Math Object Absolute Value
15:25
Example 8: Minimum and Maximum Values
17:05
Example 9: Form Objects
18:47
Example 10: Regular Expressions
23:22
Arrays

18m 19s

Intro
0:00
What is an Array?
0:09
Defining an Array
0:10
Declaring an Array
1:30
Declaring an Array
1:31
Regular Array Syntax
1:47
Regular Array Syntax
1:48
Condensed Array Syntax
2:35
Condensed Array Syntax
2:36
Literal Array Syntax
3:08
Literal Array Syntax
3:09
Push and Pop
3:30
Push and Pop Methods
3:32
Example 1: Array Creation
4:18
Example 2: Array Element Display
6:30
Example 3: Array Pop Method
7:39
Example 4: Array Push Method
9:12
Example 5: Array Reverse Method
10:22
Example 6: Array Shift Method
11:27
Example 7: Array Sort Method
12:53
Example 8: Array Slice Method
13:53
Example 9: Array Splice Method
16:42
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Lecture Comments (8)

0 answers

Post by Richard Pan on May 17, 2020

I found the arithmetic precedence rule of javascript the same as algebra class. Am I missing something here?

2 answers

Last reply by: Eric Kogan
Tue May 10, 2016 4:19 PM

Post by Ebssa Tesema on June 30, 2015

On odd even modulus example, how can you assign x and y to firstnumber and secondnumber on the same programme?? doesn't confuse the programe when you always give it assign a new value for x and y? in this example

0 answers

Post by Ebssa Tesema on June 30, 2015

I wasn't able to understand the post-inc concept but now i got it, Thanks.

So first it does the addition before it does the actual incr or decr.

0 answers

Post by Ebssa Tesema on June 30, 2015

After evaluating i++ or ++i, the new value of i will be the same in both cases. The difference between pre- and post-increment is in the result of evaluating the expression itself.


++i increments i and evaluates to the new value of i.

i++ evaluates to the old value of i, and increments i.

0 answers

Post by Maury Hillstrom on September 25, 2012

Hi Leslie,

At which point are you finding syntax errors?

0 answers

Post by leslie stapleton leslie stapleton on September 12, 2012

There seems to be syntax errors in this code!

Operators

  • Operators are familiar symbols (such as + - * / < >) that represent math functions, comparisons, boolean logic, and variable assignments
  • JavaScript follows its own set of Arithmetic Rules of Precedence which is different from standard algebra
  • Increment and Decrement operators are often used with Counters

Operators

Lecture Slides are screen-captured images of important points in the lecture. Students can download and print out these lecture slide images to do practice problems as well as take notes while watching the lecture.

  • Intro 0:00
  • Types of Operators 0:09
    • Operators Overview
  • Arithmetic Operators 1:14
    • Example: Arithmetic Operators
  • Arithmetic Rules of Precedence 4:38
    • PEMDAS (Algebra)
    • P (MDR) (AS) (JavaScript)
  • Assignment Operators 11:58
    • Example: Assignment Operators
  • Comparison Operators 15:16
    • Example: Comparison Operators
  • Boolean Logical Operators 18:19
    • && Operator
    • || Operator
    • ! Operator
  • Special Conditional Operator 22:25
    • Syntax
    • Example
  • Increment and Decrement Operators 24:03
    • Pre-Increment Operator
    • Pre-Decrement Operator
    • Post-Increment Operator
    • Post-Decrement Operator
  • Example 1: Modulus Operator 27:53
  • Example 2: Assignment Operator 32:14
  • Example 3: Characters and Data Types 37:57
  • Example 4: Characters and Data Types 43:17
  • Example 5: Boolean Logical Operators 44:56
  • Example 6: 'or' Logic 46:43
  • Example 7: Conditional Operators 49:39
  • Example 8: Increment and Decrement Operators 52:18

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