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Key stroke capture

/ Published in: JavaScript
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  1. function trap(e) {
  2. 	if (!e) {
  3. 		e = event;
  4. 		e.which = e.keyCode;
  5. 	}
  6. 	try {
  7. 		modifierKey = e.ctrlKey || e.altKey || e.metaKey;
  8. 	}
  9. 	catch(e) {
  10. 		modifierKey = false;
  11. 	}
  12. 	return modifierKey || e.which == 0;
  13. }
  14. function keys(key) {
  15. 	if (!key) {
  16. 		key = event;
  17. 		key.which = key.keyCode;
  18. 	}
  19. 	if (key.which == 84) {
  20. 		//toggle();
  21. 		return;
  22. 	}
  23. 		switch (key.which) {
  24. 			case 32: // spacebar
  25. 			case 34: // page down
  26. 			case 39: // rightkey
  27. 			case 40: // downkey
  28. 				// Do something
  29. 				break;
  30. 			case 33: // page up
  31. 			case 37: // leftkey
  32. 			case 38: // upkey
  33. 				// Do something
  34. 				break;
  35. 			case 36: // home
  36. 				// Do something
  37. 				break;
  38. 			case 35: // end
  39. 				// Do something
  40. 				break;
  41. 			case 27: // escape
  42. 			case 81: // q
  43. 				// Do something
  44. 				break;
  45. 		}
  46.  
  47. 	return false;
  48. }
  49.  
  50. function keyCap() {
  51. 	document.onkeypress = trap;
  52. 	document.onkeyup = keys;
  53. }

URL: http://rmhh.co.uk/ascii.html

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