Manning secrets of the javascript ninja nov 2009

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MEAP Edition Manning Early Access Program

Copyright 2009 Manning Publications

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Table of Contents
1. Introduction ................................................................................................................... 1 The JavaScript Language ............................................................................................. 2 Writing Cross-Browser Code........................................................................................ 3 Best Practices ............................................................................................................ 5 Summary .................................................................................................................. 6 2. Testing and Debugging.................................................................................................... 7 Debugging Code ........................................................................................................ 7 Test Generation .......................................................................................................... 8 Building a Test Suite ................................................................................................. 10 Asynchronous Testing....................................................................................... 12 Summary ................................................................................................................. 13 3. Functions ..................................................................................................................... 14 Function Definition................................................................................................... 14 Anonymous Functions and Recursion ........................................................................... 15 Functions as Objects ................................................................................................. 17 Storing Functions.............................................................................................. 18 Self-Memoizing Functions .................................................................................. 18 Context ................................................................................................................... 20 Looping .......................................................................................................... 21 Fake Array Methods.......................................................................................... 22 Variable Arguments .................................................................................................. 22 Min/Max Number in an Array ............................................................................. 23 Function Overloading........................................................................................ 23 Function Length ............................................................................................... 24 Function Type .......................................................................................................... 26 Summary ................................................................................................................. 27 4.Closures ...................................................................................................................... 28 How closures work ................................................................................................... 28 Private Variables .............................................................................................. 29 Callbacks and Timers...