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Some useful questions and answers:

  1. What are JavaScript's builtin strings?
  2. How can I format numbers as money in JavaScript?
  3. How can I get file extensions with JavaScript?
  4. Loop through JavaScript object
  5. Validate that a string is a positive integer
  6. Insert Item into Array at a Specific Index
  7. How to set object property (of object property of..) given its string name in JavaScript?
  8. Is there any x value where Math.pow(x, 0) is NOT 1?
  9. Wrap Each * on a Page Using jQuery
  10. Strange code in jQuery sources: var !== var ? x : y;
  11. What's the difference between Array(2) and [undefined, undefined]?
  12. Detecting if Anything on the Page is being Animated
  13. Sorting array by even and odd numbers
  14. Decimal to binary recursive function in JavaScript
  15. Useful undocumented methods and properties of jQuery
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