| // Use Gists to store code you would like to remember later on | |
| console.log(window); // log the "window" object to the console |
Use this to validate credit card numbers. Dashes are ignored, so users may input them if they like. Tests for Visa, Mastercard, Amex, Discover, JCB, and Diners Club. Uses two hidden fields to store the type of card entered and whether or not the number entered is a valid credit card number. Regex source: http://stackoverflow.com/questions/72768/how-do-you-detect-credit-card-type-based-on-number
A Pen by Jon Crowell on CodePen.
| // ---------------------------------------------------------- | |
| // A short snippet for detecting versions of IE in JavaScript | |
| // without resorting to user-agent sniffing | |
| // ---------------------------------------------------------- | |
| // If you're not in IE (or IE version is less than 5) then: | |
| // ie === undefined | |
| // If you're in IE (>=5) then you can determine which version: | |
| // ie === 7; // IE7 | |
| // Thus, to detect IE: | |
| // if (ie) {} |