25 lines
807 B
JavaScript
25 lines
807 B
JavaScript
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//@ts-check
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import {getReasonableUuid} from "./getReasonableUuid.mjs"
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/**
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* Returns an id that is guaranteed to not exist in the current loaded page.
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* Only usable in the browser, after the page has loaded.
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* Using it outside the browser or prior to loading will yield a pseudo-unique id,
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* but not guaranteed unique.
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* Ids are deterministic, so calling this function in the same order will always return
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* the same set of ids.
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* @see {uuid}
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* @param {string} prefix any prefix you like, it helps discriminate ids
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*/
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export const getPageUniqueId = (prefix = "") => {
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let id = prefix;
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let limit = 99999;
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while (
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typeof document !== "undefined" &&
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document.getElementById((id = `${prefix}${getReasonableUuid()}`)) &&
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limit-- > 0
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);
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return id;
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};
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export default getPageUniqueId
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