This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.
The disabled property of the HTMLFieldSetElement interface is a boolean value that reflects the <fieldset> element's disabled attribute, which indicates whether the control is disabled.
When disabled, all the form control descendants of the <fieldset> element, excluding elements that are descendants of the <legend> child of the <fieldset>, if any, are disabled. A disabled element is unusable and un-clickable, and match the :disabled selector, even if their disabled property value is false.
A boolean value.
const fs = document.getElementById("billing-address");
console.log(fs.disabled);
fs.disabled = true;
| Specification |
|---|
| HTML> # dom-fieldset-disabled> |
| Desktop | Mobile | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Opera | Safari | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | WebView Android | WebView on iOS | |
disabled |
20 | 12 | 4 | ≤12.1 | 6 | 25 | 4 | ≤12.1 | 6 | 1.5 | 4.4 | 6 |
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https://developer.mozilla.org/en-US/docs/Web/API/HTMLFieldSetElement/disabled