29 lines
949 B
JavaScript
29 lines
949 B
JavaScript
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/** A storage solution aimed at replacing jQuerys data function.
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* Implementation Note: Elements are stored in a (WeakMap)[https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/WeakMap].
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* This makes sure the data is garbage collected when the node is removed.
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*/
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const dataStorage = {
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_storage: new WeakMap(),
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put: function (element, key, obj) {
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if (!this._storage.has(element)) {
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this._storage.set(element, new Map())
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}
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this._storage.get(element).set(key, obj)
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},
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get: function (element, key) {
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return this._storage.get(element)?.get(key)
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},
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has: function (element, key) {
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return this._storage.has(element) && this._storage.get(element).has(key)
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},
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remove: function (element, key) {
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const ret = this._storage.get(element).delete(key)
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if (this._storage.get(element).size === 0) {
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this._storage.delete(element)
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}
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return ret
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}
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}
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export default dataStorage
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