Javascript - Regex to validate a tridion tcm id

Question

Validating a tridion TCM ID using Regex on javascript, looks quiet simple but unfortunately I failed to do this.

I have attempted all the possible ways to validate a tcm id.

Below is the last tried regex:-

(tcm:(\d)+-(\d)+(-16|-4|-64))\W

Here, TCM ID can be component or SG or Page.

Valid tcm id's are

1. tcm:123-5678-4
2. tcm:123-5678-64
3. tcm:123-5678-16
4. tcm:123-5678

Please suggest the best regex to validate a tcm id.

Answer 1

The regex xdazz provided is great for matching the examples you gave. But for more generic handling you might want to:

1. remove the exact cardinalities from, since there may be more or fewer digits in each of the numbers. So /^tcm:\d+-\d+(?:-16|-4|-64)?$/
2. consider if you want to match every item type and if so, update the last match group accordingly. In the most generic case it can be just /^tcm:\d+-\d+(?:-\d+)?$/
3. keep in mind that a TCM URI can also refer to a specific version and thus end with -v123. so that would lead to /^tcm:\d+-\d+(?:-\d+)?(?:-v\d+)?$/

Of course that brings you pretty close to Nuno's answer, which has the added advantage that the match groups have readable names.