[1] Issue 2218 - v8 - HTML extensions to String.prototype should throw an error if the `this` object is not coercible (i.e. `null` or `undefined`) - V8 JavaScript Engine - Google Project Hosting ( (2014-08-08 13:21:10 +09:00 版)) https://code.google.com/p/v8/issues/detail?id=2218