How do I set a character limit on a custom field using scriptrunner in Jira Cloud?

Jessica Verge

I am way out of my league here. I attempted searching the database for a script to use in scriprunner for my issue, but I have found that their answers didn't work for me. That could be because they are running scriptrunner on a server and not cloud. One solution was to use scriptrunner behaviours but I am unable to find that in the cloud version. Any help would be greatly appreciated. 

Andy Heinzer

While I believe you can use scriptrunner to help with this, you could also just use a bit of javascript to help here.   @Andy Keyworth had a post over on https://community.atlassian.com/t5/Jira-Core-questions/Setting-a-character-limit-on-a-text-field-single-line/qaq-p/66709

with some example code, that @SABVARX also helped with.

What you can do is go into the field description in Jira, and then input a script like this:

<script type="text/javascript">
function validate()
    {   
        if(document.getElementById("customfield_19600").value.length >33)
        {
            alert( "Invalid length, must be no more than 33 characters" );
            return false;
        }   
    }
document.getElementById("customfield_19600").addEventListener("keypress", validate);
</script>

In this case, you would have to substitute the 'customfield_19600' with the customfield number this is, and you can also change the specific length you want these values to be.   I would recommend looking into How to find id for custom field(s)?  in order to find your custom field id.   And you also might need to review the documentation on Configuring a custom field in order to understand where you can edit the custom field description.