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swtich with range in javascript

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  1. function GetOpacity(value)
  2. 	{
  3. 		var result;
  4. 		switch (true)
  5. 		{
  6. 			case (value == 0):
  7. 				result = 0;
  8. 				break;
  9. 			case ((value >= 0) && (value <= 1)): // "Between 1 and 25."
  10. 				result = 0.1;
  11. 				break;
  12. 			case ((value >= 1) && (value <= 2)): // "Between 1 and 25."
  13. 				result = 0.2;
  14. 				break;
  15. 			case ((value >= 2) && (value <= 3)): // "Between 1 and 25."
  16. 				result = 0.25;
  17. 				break;
  18. 			case ((value >= 3) && (value <= 4)): // "Between 1 and 25."
  19. 				result = 0.3;
  20. 				break;
  21. 			case ((value >= 5) && (value <= 10)): //"Between 26 and 50."
  22. 				result = 0.5;
  23. 				break;
  24. 			case ((value >= 10) && (value <= 15)): //"Between 26 and 50."
  25. 				result = 0.6;
  26. 				break;
  27. 			case ((value >= 16) && (value <= 50)): //"Between 26 and 50."
  28. 				result = 0.7;
  29. 				break;
  30. 			case ((value >= 51) && (value <= 75)): // "Between 51 and 75."
  31. 				result = 0.8;
  32. 				break;
  33. 			case ((value >= 76) && (value <= 100)): //"Between 76 and 100."
  34. 				result = 1;
  35. 				break;
  36. 			default:
  37. 				result = 0;
  38. 				break;
  39. 		}
  40. 		return result;
  41. 	}

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