docs(isNumber): add info about using isFinite to exclude NaN

petebacondarwin · petebacondarwin · commit ce8be9c47f14 · 2015-03-06T11:36:26.000Z
Closes angular#11230
diff --git a/src/Angular.js b/src/Angular.js
@@ -482,6 +482,12 @@ function isString(value) {return typeof value === 'string';}
  * @description
  * Determines if a reference is a `Number`.
  *
+ * This includes the "special" numbers `NaN`, `+Infinity` and `-Infinity`.
+ *
+ * If you wish to exclude these then you can use the native
+ * [`isFinite'](`https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/isFinite)
+ * method.
+ *
  * @param {*} value Reference to check.
  * @returns {boolean} True if `value` is a `Number`.
  */
