Regular Expressions (RegExp in Geek talk) are sometimes an intimidating roadblock to those attempting to learn Javascript programming, but they are a very powerful tool and well worth the effort it takes to understand them. Using regular expressions, you can format and validate text strings, using certain symbols that will accomplish with only a few lines of code what would otherwise take a page full.

Regular expressions are used with some of the same operators that are used in math expressions, and are simply a way of matching patterns to validate, or confirm, that what is entered by the user is only what you want entered, and in the correct format.

Ready to Start? Then just click on Part 1 above and we're on our way!