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Asked: 2026-05-23T11:24:02+00:00

I have a random amount of select boxes generated by javascript, all containing the

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I have a random amount of select boxes generated by javascript, all containing the same options. Now I wish to have a “master-selectbox” which sets the value for each and every one of them.

Currently I have <select id="changeKlas" onChange="javascript:changeClass(this.parentNode, getElementById(changeKlas))">

At the javascript I’ve gotten as far as to find each and every select box and I already know how to set the value but the value is not being send to javascript.

On each attempt I have made the getElementById(changeKlas) is null. How can I fix this so I can get the text and value of the selected textbox in the given select?

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1 Answer

  1. Editorial Team

    You need to quote the id: [...], document.getElementById('changeKlas') — notice the single quote, double quote needs to be escaped because of the outer one from onChange. Also, notice that getElementById belongs to document

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