Unlike If statements, switch statements in JavaScript can be useful in situations where there are multiple conditions to be checked. Simon covers the usage of switch statements to include several cases or options to check, as well ideal use cases for using switch statements instead of if statements.
You will end up writing if statements in pretty much every program you ever write, …but sometimes there's a specific situation where it's not the only option…for checking a condition.…Let's say you're checking a variable for a selection of very specific values.…Here is what I mean by that.…We create a variable in this case called grade, and somewhere in the program I…want to check is it Regular or is it Premium or is it Diesel?…I've got a few very specific values I'm asking for.…We can do this as a series of separate self-contained if statements like I have…here or we could even start using the else condition to actually start combining…them altogether, but this can get a little clunky, particularly if you don't just…have three or four but you have 10 or 12.…
Well, in this kind of situation, JavaScript and most other languages have…something called the switch statement instead of the if statement.…Now in some other languages, it's called the select or select case statement,…but it's the ability to list in one place several situations or cases that…
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
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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: Using the switch statement