isFinite.js 811 B

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  1. /* Native method references for those with the same name as other `lodash` methods. */
  2. var nativeIsFinite = global.isFinite;
  3. /**
  4. * Checks if `value` is a finite primitive number.
  5. *
  6. * **Note:** This method is based on [`Number.isFinite`](http://ecma-international.org/ecma-262/6.0/#sec-number.isfinite).
  7. *
  8. * @static
  9. * @memberOf _
  10. * @category Lang
  11. * @param {*} value The value to check.
  12. * @returns {boolean} Returns `true` if `value` is a finite number, else `false`.
  13. * @example
  14. *
  15. * _.isFinite(10);
  16. * // => true
  17. *
  18. * _.isFinite('10');
  19. * // => false
  20. *
  21. * _.isFinite(true);
  22. * // => false
  23. *
  24. * _.isFinite(Object(10));
  25. * // => false
  26. *
  27. * _.isFinite(Infinity);
  28. * // => false
  29. */
  30. function isFinite(value) {
  31. return typeof value == 'number' && nativeIsFinite(value);
  32. }
  33. module.exports = isFinite;