In JavaScript, operators are commands that make the code perform actions. Many of the operator symbols are easily recognizable, such as plus and minus signs. Since a program can include many types of operators, JavaScript gives some more importance than others. This online video from Lynda.com will teach you several common operator symbols and how working with operators can help you control what programs do.
So we've seen that JavaScript has words like alert and prompt that are…causing it to do things to pop up dialog boxes.…But also, it's beginning to be obvious that there are symbols like the equals sign…that are absolutely as meaningful as words are in a programming language,…because this also causes things to happen.…It can take the literal value 500, and cause it to be put in the variable called…Balance and this equals sign, this assignment operator, is one of many operators…in programming languages that will cause things to happen.…
Let's explore a few more of these operators by starting off with a few that you…already know how to use.…So the most obvious ones are the arithmetic operators.…We have operators for addition, subtraction, multiplication, and division which…we're using the asterisk for multiplication and the forward slash for division.…We're usually using this in combination with the equals sign as well.…But let's say we create a couple of variables, variable a = 100, variable b, set…
Author
Released
9/22/2011Finally, the course compares how code is written in several different languages, the libraries and frameworks that have grown around them, and the reasons to choose each one.
- Writing source code
- Understanding compiled and interpreted languages
- Requesting input
- Working with numbers, characters, strings, and operators
- Writing conditional code
- Making the code modular
- Writing loops
- Finding patterns in strings
- Working with arrays and collections
- Adopting a programming style
- Reading and writing to various locations
- Debugging
- Managing memory usage
- Learning about other languages
Skill Level Beginner
Duration
Views
Q: Using TextEdit with Mac OS 10.9 Mavericks?
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Introduction
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Welcome1m 13s
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1. Programming Basics
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What is programming?5m 45s
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Writing source code5m 34s
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2. Core Programming Syntax
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Why JavaScript?4m 45s
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Requesting input4m 50s
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3. Variables and Data Types
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Working with numbers5m 4s
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Working with operators4m 47s
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Properly using white space6m 46s
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4. Writing Conditional Code
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Setting comparison operators6m 59s
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5. Modular Code
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Breaking your code apart4m 1s
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Understanding variable scope2m 23s
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6. Iteration: Writing Loops
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Introduction to iteration4m 28s
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Writing a while statement5m 24s
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Creating a for loop3m 39s
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7. More About Strings
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8. Collections
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Working with arrays5m 46s
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Array behavior5m 29s
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9. Programming Style
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Programming style5m 55s
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Writing pseudocode4m 55s
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10. Input and Output
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Event driven programming7m 47s
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Introduction to file I/O6m 51s
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11. When Things Go Wrong
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Introduction to debugging5m 57s
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Understanding error messages3m 21s
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Using debuggers8m 2s
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12. Introduction to Object Orientation
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Using classes and objects6m 28s
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13. Advanced Topics
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14. Exploring the Languages
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Introduction to languages1m 42s
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C-based languages4m 40s
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The Java world3m 13s
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Ruby3m 4s
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Python2m 56s
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Objective-C4m 3s
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Libraries and frameworks3m 25s
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Conclusion
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Where to go from here1m 2s
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Video: Working with operators