utils.js 386 B

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  1. //生成从minNum到maxNum的随机数
  2. function randomNum(minNum, maxNum) {
  3. switch (arguments.length) {
  4. case 1:
  5. return parseInt(Math.random() * minNum + 1, 10);
  6. break;
  7. case 2:
  8. return parseInt(Math.random() * (maxNum - minNum + 1) + minNum, 10);
  9. break;
  10. default:
  11. return 0;
  12. break;
  13. }
  14. }