Validating forms using vbscript
, composing a fairly comprehensive guide to validating and formatting North American and international phone numbers using regular expressions. Thus, the sequences that enclose the first group of digits match literal parenthesis characters.
The regexes in these recipes are all pretty straightforward, but hopefully this gives an example of the depth you can expect from the book. Both are followed by a question mark, which makes them optional.
A regular expression can easily check whether a user entered something that looks like a valid phone number. In this case, backreferences to the captured values are used in the replacement text so we can easily reformat the phone number as needed.
By using capturing groups to remember each set of digits, the same regular expression can be used to replace the subject text with precisely the format you want. Two other types of tokens used in this regular expression are character classes and quantifiers.
After that, it takes a certain amount of time for the intended users of that technology to adjust to how it works and how to use it.
If you've heard a lot about VBScript and what it can do but you've been bombarded with so much new information that it's hard to absorb it all, you're not alone. It will clearly and methodically explain to you the essence of VBScript-that is, what it's all about.
HTML5 added three attributes which can be applied to : Checkboxes are similar to radio buttons, but more than one selection can be active at a time.
Test on demand or automate testing throughout development lifecycles.