August 2014: Lately I've added many new regex pages and been making major overhauls to old ones. Once you learn it, you discover it comes in handy in many places where you hadn't planned to use it.
I have not yet had time to revise this page, so please be aware that it is not up the same standard as most pages in the tutorial. On this page, we'll first look at a number of contexts and programs where you may find regex.
There are other ways to highlight the field in question besides changing the text color, the border color or the fill color could be changed instead, or in addition, just make sure that you are not making the form impossible to read.
To learn more about the event object, take a look at JS.88.560– make sure to click on the button in the upper left corner to display the navigation pane if it’s not shown automatically.
Still, a ten-year-old PCRE is a lot better than Java Script. It does one job, and does it brilliantly: searching for and replacing text in a file, or many files at once.
In the result window, the results change instantaneously as you tweak the expression, much as in Regex Buddy. Searching and replacing across pages of code when using in an IDE such as Visual Studio, Komodo IDE or even Dreamweaver's crippled ECMAScript flavor. For advanced search and replace when using creativity software such as Adobe Indesign. in an advanced file manager such as Directory Opus or a renamer such as PFrank (Win) or A Better Finder Rename (OSX).
In that case, the previous value of the field is restored, and the user has to enter the data again.
This is not always desired (for more complicated data, it will probably be much easier to take a look, correct that one typo and continue with the rest of the form), so my preference is actually to mark the field so that the user knows which field needs to be corrected, and have the validation script not report a validation error back to the field: Using this method has implications on the form submission process: The form no longer can verify that the data is correct, so the submission function needs to do another round of validation to see if any of the required fields are not correct (one way to do that is to test all relevant fields to see if the text color is using the error color, or we can use global variables to store the validation state).
Let’s take a look at how to do that with a text field that is only supposed to have a value of either ‘AAAA’ or ‘BBBB’ (yes, I know that this does not make much sense in a real PDF form).
So, if the user enters ‘01234’ we should see an error message that would instruct the user about what type of data is valid for this field.
If you haven't seen it yet, you really owe it to yourself to take a tour of Directory Opus features or install the nag-free, fully functional 60-day trial. how to behave with certain IP addresses, urls or browsers, in htaccess for instance. Helping you while away the tedious afternoon office hours by exchanging regex challenges with your colleagues.