{"id":949,"date":"2022-11-24T00:47:02","date_gmt":"2022-11-23T21:47:02","guid":{"rendered":"https:\/\/webcademy.ru\/blog\/?p=949"},"modified":"2022-11-24T00:47:04","modified_gmt":"2022-11-23T21:47:04","slug":"uselocalstorage-hook-%d0%b2-react-js","status":"publish","type":"post","link":"https:\/\/webcademy.ru\/blog\/949\/","title":{"rendered":"useLocalStorage hook \u0432 React JS"},"content":{"rendered":"\n<p>\u0418\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0435 localStorage \u0438 \u0441\u043e\u0441\u0442\u043e\u044f\u043d\u0438\u044f useState \u0432 \u0444\u0443\u043d\u043a\u0446\u0438\u043e\u043d\u0430\u043b\u044c\u043d\u043e\u043c \u043a\u043e\u043c\u043f\u043e\u043d\u0435\u043d\u0442\u0435 React JS.<\/p>\n\n\n\n<p><code>useLocalSorage.js<\/code><\/p>\n\n\n\n<div class=\"wp-block-codemirror-blocks-code-block code-block\"><pre class=\"CodeMirror\" data-setting=\"{&quot;showPanel&quot;:true,&quot;languageLabel&quot;:false,&quot;fullScreenButton&quot;:true,&quot;copyButton&quot;:true,&quot;mode&quot;:&quot;javascript&quot;,&quot;mime&quot;:&quot;text\/ecmascript&quot;,&quot;theme&quot;:&quot;material&quot;,&quot;lineNumbers&quot;:true,&quot;styleActiveLine&quot;:true,&quot;lineWrapping&quot;:false,&quot;readOnly&quot;:true,&quot;fileName&quot;:&quot;&quot;,&quot;language&quot;:&quot;JavaScript&quot;,&quot;maxHeight&quot;:&quot;400px&quot;,&quot;modeName&quot;:&quot;js&quot;}\">import { useState, useEffect } from 'react';\n\nfunction getStorageValue(key, defaultValue) {\n\t\/\/ getting stored value\n\tconst saved = localStorage.getItem(key);\n\tconst initial = JSON.parse(saved);\n\treturn initial || defaultValue;\n}\n\nexport const useLocalStorage = (key, defaultValue) =&gt; {\n\tconst [value, setValue] = useState(() =&gt; {\n\t\treturn getStorageValue(key, defaultValue);\n\t});\n\n\tuseEffect(() =&gt; {\n\t\t\/\/ storing input name\n\t\tlocalStorage.setItem(key, JSON.stringify(value));\n\t}, [key, value]);\n\n\treturn [value, setValue];\n};\n<\/pre><\/div>\n\n\n\n<p>\u0418\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0435:<\/p>\n\n\n\n<div class=\"wp-block-codemirror-blocks-code-block code-block\"><pre class=\"CodeMirror\" data-setting=\"{&quot;showPanel&quot;:true,&quot;languageLabel&quot;:false,&quot;fullScreenButton&quot;:true,&quot;copyButton&quot;:true,&quot;mode&quot;:&quot;javascript&quot;,&quot;mime&quot;:&quot;text\/ecmascript&quot;,&quot;theme&quot;:&quot;material&quot;,&quot;lineNumbers&quot;:true,&quot;styleActiveLine&quot;:true,&quot;lineWrapping&quot;:false,&quot;readOnly&quot;:true,&quot;fileName&quot;:&quot;&quot;,&quot;language&quot;:&quot;JavaScript&quot;,&quot;maxHeight&quot;:&quot;400px&quot;,&quot;modeName&quot;:&quot;js&quot;}\">import { useLocalStorage } from '..\/..\/utils\/useLocalStorage';\n\nconst [value, setValue] = useLocalStorage(\n \t'keyNameInLocalStorage', \n\t'default value'\n); <\/pre><\/div>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u0418\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0435 localStorage \u0438 \u0441\u043e\u0441\u0442\u043e\u044f\u043d\u0438\u044f useState \u0432 \u0444\u0443\u043d\u043a\u0446\u0438\u043e\u043d\u0430\u043b\u044c\u043d\u043e\u043c \u043a\u043e\u043c\u043f\u043e\u043d\u0435\u043d\u0442\u0435 React JS. useLocalSorage.js \u0418\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0435:<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[22],"tags":[],"class_list":["post-949","post","type-post","status-publish","format-standard","","category-react-js"],"_links":{"self":[{"href":"https:\/\/webcademy.ru\/blog\/wp-json\/wp\/v2\/posts\/949"}],"collection":[{"href":"https:\/\/webcademy.ru\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/webcademy.ru\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/webcademy.ru\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/webcademy.ru\/blog\/wp-json\/wp\/v2\/comments?post=949"}],"version-history":[{"count":0,"href":"https:\/\/webcademy.ru\/blog\/wp-json\/wp\/v2\/posts\/949\/revisions"}],"wp:attachment":[{"href":"https:\/\/webcademy.ru\/blog\/wp-json\/wp\/v2\/media?parent=949"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/webcademy.ru\/blog\/wp-json\/wp\/v2\/categories?post=949"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/webcademy.ru\/blog\/wp-json\/wp\/v2\/tags?post=949"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}