In Javascript, an array is more than just a container for data. It is also what's known as an object, which means that you can get it to perform useful functions. In this Lynda.com training video, you'll learn about array behavior, including how arrays store their elements and and how you can call basic array functions.
We are working with arrays and in JavaScript arrays are objects, and that's one…of those words that sounds very generic, but it has a meaning in programming.…We are going into what objects are but for now it just means they are more than…dumb containers of data.…Arrays are smart. They can tell us information about themselves.…They have behavior. They can actually do things if we ask them to.…And what do I mean by that?…We have kind of seen some of this already.…Let's say I create a variable that's just a string.…But we have seen that we can use the .length property of that string variable to…find information about the string.…
In this case, it would pop up the length of it being 24.…I didn't have to go and count all the letters.…The string itself actually knew what its length was, and we can use that same…kind of format to find information about arrays.…Let's say I use the shorthand format to create an array here with five elements…ranging from position 0 through position 4.…I could do something very similar that I did with the string and…
Author
Simon Allardice
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
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Introduction
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Welcome1m 17s
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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: Array behavior