Select field with same name

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Hi, from the bottom of this page I'm trying to change last 'select' name from "Indice e sommario" to "Classificazione".

Thank you!

What I have tried:

JavaScript

const select = document.querySelector('select[name="canale"]')[3];
 select.value = 'CL';

Posted 26-Mar-23 0:19am

Parvares

Updated 26-Mar-23 22:45pm

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Chris Copeland · Accepted Answer · 2023-03-26T22:45:00

The method querySelector() returns only a single HTML element as a result, or null if no possible match was found. You're using it as if it returns multiple values, which it won't.

If there are multiple elements with the same name, instead use querySelectorAll() which will return a collection of elements. Otherwise, I'd maybe look at giving these selects unique id attributes and selecting them that way. Relying on the element being at a fixed index in the query selector could probably spell trouble in the future.

// Use the all method
const select = document.querySelectorAll('select[name="canale"]')[3];
select.value = 'CL';

// Better yet, give the element a unique ID
const select = document.getElementById('canale3');
select.value = 'CL';