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Reference a cascading dropdown to disable it with javascript

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I'm trying to reference a field, in a Details datapage, that is a cascading dropdown (the field is a text field called 'Area'). I need to disable it conditionally using javascript (I've found that when there are a lot of Rules it significantly slows the datapage loading compared to using js, so I need to use js to do this). 

I've been able to do this no problem with regular text fields and dropdowns but can't get it to read the cascading dropdown. I've been trying to use something like: 

var v_area = document.getElementsByName("EditRecordArea")[0]; 

along with the disable code in an if/then clause v_area.disabled=true;

Does anyone know how to alter the above to be able to use it in js? Many thanks!

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  • 3 weeks later...

Hi @DesiLogi,

It is possible with JavaScript to disable Cascading dropdown, however I would recommend using a Cascading TextField that has an option to disable the input field if only one option returned.

If my suggestion does not fit your workflow than you can use the following JavaScript:

document.addEventListener('DataPageReady', function (event) {
    const el = document.querySelector('select[id^="InsertRecordYOUR_FIELD"]');
    el.addEventListener('change', ()=>el.disabled="true");   



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  • 1 month later...

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