How to display/hide a Field based on another Field's selection

[Deleted user]

Hi

i would liketo hide some fields (or tab if this is possible) if in another field is something

i found this script : 

<script type="text/javascript">
priority = document.getElementById('priority');
if (priority) {
target = document.getElementById('customfield_10142');
// Hide the target field if priority isn't critical
if (priority.value != 2) target.style.display='none';

priority.onchange=function() {
if (this.value == 2) {
target.style.display = '';
target.value="enter message here";
} else {
target.style.display='none';
}
}
}
</script>

And this is working but only in a new window, if i'm creating issue in pop-up window its not working.

I'm putting this script in description of custom field.

I would like do this without plugins.

Thanks

[Danyal Iqbal]

That makes sense. The popup ( js) is only loaded once.

Select the correct project and issue type (with applicable js) in the popup. Close and reopen the popup. The js should work only when customfield_10142  is already present on the form when you open the popup. If you have to change the project/issue-type in the popup, your js has already failed before that.

As a workaround you can execute the js everytime the issue-type /project is changed (exactly like the example script).

[Deleted user]

And how i can execute the js everytime ? 

[Danyal Iqbal]

put the script inside

JIRA.bind(JIRA.Events.NEW_CONTENT_ADDED, function(e, context) {})

e.g

JIRA.bind(JIRA.Events.NEW_CONTENT_ADDED, function(e, context) {
console.log("new content added")

priority = document.getElementById('priority');
if (priority) {
target = document.getElementById('customfield_12400');
// Hide the target field if priority isn't critical
if (priority.value != 10001) target.style.display='none';

priority.onchange=function() {
if (this.value == 10001) {
target.style.display = '';
target.value="enter message here";
} else {
target.style.display='none';
}
}
}
})

[Deleted user]

I have to copy all of the code do the description of field ? 

Only change customfield id and priority.value ? 

[Danyal Iqbal]

yes and don't froget the <script type="text/javascript"></script > tags :)

[TG]

Hello. Does that work on a JIRA server 7.3.3 ? Does it rquires a script-runner plugin or kind-off ? Regards.

[Danyal Iqbal]

It should work on jira server by putting the script in the description of custom field present on that screen.

[TG]

I introduced the code into a field-configuration field description. At issuecreation time, the code is just rendered as plain text. Not interpreted as code. I.E. I can reed the displayed code on the issue pop-up screen. Maybe I must change the main field description as opposed the to field-configuration field description ?
Also, I understood now JIRA would not let JS code inserted in description be ran as code ? So... I am confused.