This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.
The toString() stringifier method of the DOMTokenList interface returns the values of the token list serialized as a string. The return value is a space-separated list of tokens equal to the DOMTokenList.value property.
toString()
None.
A string.
const element = document.createElement("div");
const classes = element.classList;
element.className = "shop empty-cart";
classes.add("logged-in", "dark-mode");
console.log(classes.toString());
// "shop empty-cart logged-in dark-mode"
| Specification |
|---|
| DOM> # DOMTokenList-stringification-behavior> |
| Desktop | Mobile | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Opera | Safari | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | WebView Android | WebView on iOS | |
toString |
8 | 12 | 3.6 | ≤12.1 | 5.1 | 18 | 4 | ≤12.1 | 5 | 1.0 | 4.4 | 5 |
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https://developer.mozilla.org/en-US/docs/Web/API/DOMTokenList/toString