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Apr 24th, 2019
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  1. function uuid4() {
  2. var uuid = '', ii;
  3. for (ii = 0; ii < 32; ii += 1) {
  4. switch (ii) {
  5. case 8:
  6. case 20:
  7. uuid += '-';
  8. uuid += (Math.random() * 16 | 0).toString(16);
  9. break;
  10. case 12:
  11. uuid += '-';
  12. uuid += '4';
  13. break;
  14. case 16:
  15. uuid += '-';
  16. uuid += (Math.random() * 4 | 8).toString(16);
  17. break;
  18. default:
  19. uuid += (Math.random() * 16 | 0).toString(16);
  20. }
  21. }
  22. return uuid;
  23. };
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