I want to set a dropdown list conditionally to disabled similar to the solution below which works for a text input.
forums.limesurvey.org/forum/can-i-do-thi...on-input-to-disabled

<script type="text/javascript" charset="utf-8">
$(document).on('ready pjax:complete',function() {
var lockit = '{DisableThem.NAOK}';
if (lockit == 'Y') {
$("#answer123432X6804X55061").prop('readonly', true);
}
else {
$("#answer123432X6804X55061").prop('readonly', false);
}
});
</script>

How can I update the code to make it work for a dropdown list?

You should provide the LimeSurvey version you use. Workarounds often only work in certain versions. You might provide a LSS export of an example survey with just the one question the workaround should be applied too as well.

I work with Limesurvey 3.15.5+181115

In attachment you can find the lss.
If you enter Y in the DisableFields question the two other questions (tekst and lijst) should be disabled.
This is working for the tekst question but not for the lijst question which is of a different type (dropdown)

Thank you for your response,

You want to disable the whole question?

Why not use relevance equation (to hide the question)?
DisableFields!="Y"

Or ist there something else you did not mention yet?

Joffm

We want the information to remain visible.
The purpose of this is the following.
The survey has to be completed by two persons subsequently.
We want to create an expense report application. The person declaring his expenses fills in the survey. Next the supervisor receives an email with a link to the same survey so he can view the data entered. This supervisor enters a password in the DisableFields question which disables the questions filled in by the first person so he is not able to change the declaration (for example change the amount declared) This password field also unhides an approval question so the supervisor can accept or reject the declaration.
In a third step after approval the first person enters his final expenses.

If we use relevance equation to hide a question the data entered is lost.

There is no "readonly" property available for select (dropdown) elements.

If you use the "disabled" property, the data will not be recorded.

Any suggestions?

Use Javascript or CSS to hide the dropdown, use Expression Script to display its value.

I'm not in a position this week to give detailed examples.

tpartner wrote: There is no "readonly" property available for select (dropdown) elements.

If you use the "disabled" property, the data will not be recorded.

Yep,

With dropdown where i need value submitted but need a "readonly" system : i add disabled property at all not selected value

It work

Can you give me example code to disable all not selected values in a dropdown list?

In question text edition,
Something like this