[](https://www.npmjs.com/package/@polymer/iron-localstorage) [](https://travis-ci.org/PolymerElements/iron-localstorage) [](https://webcomponents.org/element/@polymer/iron-localstorage) ⚠️ This element is deprecated ⚠️ ## <iron-localstorage> Element access to Web Storage API (window.localStorage) by keeping `value` property in sync with localStorage. Value is saved as json by default. See: [Documentation](https://www.webcomponents.org/element/@polymer/iron-localstorage), [Demo](https://www.webcomponents.org/element/@polymer/iron-localstorage/demo/demo/index.html). ## Usage ### Installation ``` npm install --save @polymer/iron-localstorage ``` ### In an html file ```html ``` ### In a Polymer 3 element ```js import {PolymerElement, html} from '@polymer/polymer'; import '@polymer/iron-localstorage/iron-localstorage.js'; class SampleElement extends PolymerElement { static get template() { return html` `; } static get properties() { return { cartoon: { type: Object }, } } // initializes default if nothing has been stored initializeDefaultCartoon() { this.cartoon = { name: "Mickey", hasEars: true } } // use path set api to propagate changes to localstorage makeModifications() { this.set('cartoon.name', "Minions"); this.set('cartoon.hasEars', false); } } customElements.define('sample-element', SampleElement); ``` ## Contributing If you want to send a PR to this element, here are the instructions for running the tests and demo locally: ### Installation ```sh git clone https://github.com/PolymerElements/iron-localstorage cd iron-localstorage npm install npm install -g polymer-cli ``` ### Running the demo locally ```sh polymer serve --npm open http://127.0.0.1:/demo/ ``` ### Running the tests ```sh polymer test --npm ```