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Remedial Javascript Functionalities

/ Published in: JavaScript
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  1. function typeOf(value) {
  2.     var s = typeof value;
  3.     if (s === 'object') {
  4.         if (value) {
  5.             if (value instanceof Array) {
  6.                 s = 'array';
  7.             }
  8.         } else {
  9.             s = 'null';
  10.         }
  11.     }
  12.     return s;
  13. }
  14.  
  15. String.prototype.supplant = function (o) {
  16.     return this.replace(/{([^{}]*)}/g,
  17.         function (a, b) {
  18.             var r = o[b];
  19.             return typeof r === 'string' || typeof r === 'number' ? r : a;
  20.         }
  21.     );
  22. };
  23.  
  24. String.prototype.trim = function () {
  25.     return this.replace(/^\s+|\s+$/g, "");
  26. };

URL: http://javascript.crockford.com/remedial.html

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