{"id":18638,"date":"2024-03-15T17:22:10","date_gmt":"2024-03-15T17:22:10","guid":{"rendered":"https:\/\/www.silicloud.com\/blog\/how-does-react-read-json-data\/"},"modified":"2024-03-21T13:47:16","modified_gmt":"2024-03-21T13:47:16","slug":"how-does-react-read-json-data","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/blog\/how-does-react-read-json-data\/","title":{"rendered":"How does React read JSON data?"},"content":{"rendered":"<p>In React, you can use the fetch function to send a request and retrieve data from a JSON file. Here is an example code:<\/p>\n<pre class=\"post-pre\"><code><span class=\"hljs-keyword\">import<\/span> <span class=\"hljs-title class_\">React<\/span>, { useState, useEffect } <span class=\"hljs-keyword\">from<\/span> <span class=\"hljs-string\">'react'<\/span>;\r\n\r\n<span class=\"hljs-keyword\">const<\/span> <span class=\"hljs-title function_\">MyComponent<\/span> = (<span class=\"hljs-params\"><\/span>) =&gt; {\r\n  <span class=\"hljs-keyword\">const<\/span> [data, setData] = <span class=\"hljs-title function_\">useState<\/span>([]);\r\n\r\n  <span class=\"hljs-title function_\">useEffect<\/span>(<span class=\"hljs-function\">() =&gt;<\/span> {\r\n    <span class=\"hljs-title function_\">fetch<\/span>(<span class=\"hljs-string\">'data.json'<\/span>) <span class=\"hljs-comment\">\/\/ \u8bfb\u53d6data.json\u6587\u4ef6<\/span>\r\n      .<span class=\"hljs-title function_\">then<\/span>(<span class=\"hljs-function\"><span class=\"hljs-params\">response<\/span> =&gt;<\/span> response.<span class=\"hljs-title function_\">json<\/span>()) <span class=\"hljs-comment\">\/\/ \u5c06\u54cd\u5e94\u89e3\u6790\u4e3aJSON\u683c\u5f0f<\/span>\r\n      .<span class=\"hljs-title function_\">then<\/span>(<span class=\"hljs-function\"><span class=\"hljs-params\">jsonData<\/span> =&gt;<\/span> <span class=\"hljs-title function_\">setData<\/span>(jsonData)) <span class=\"hljs-comment\">\/\/ \u5c06JSON\u6570\u636e\u5b58\u50a8\u5230\u72b6\u6001\u4e2d<\/span>\r\n      .<span class=\"hljs-title function_\">catch<\/span>(<span class=\"hljs-function\"><span class=\"hljs-params\">error<\/span> =&gt;<\/span> <span class=\"hljs-variable language_\">console<\/span>.<span class=\"hljs-title function_\">error<\/span>(error)); <span class=\"hljs-comment\">\/\/ \u5904\u7406\u8bf7\u6c42\u9519\u8bef<\/span>\r\n  }, []);\r\n\r\n  <span class=\"hljs-keyword\">return<\/span> (\r\n    <span class=\"language-xml\"><span class=\"hljs-tag\">&lt;<span class=\"hljs-name\">div<\/span>&gt;<\/span>\r\n      {data.map(item =&gt; (\r\n        <span class=\"hljs-tag\">&lt;<span class=\"hljs-name\">div<\/span> <span class=\"hljs-attr\">key<\/span>=<span class=\"hljs-string\">{item.id}<\/span>&gt;<\/span>\r\n          <span class=\"hljs-tag\">&lt;<span class=\"hljs-name\">h2<\/span>&gt;<\/span>{item.title}<span class=\"hljs-tag\">&lt;\/<span class=\"hljs-name\">h2<\/span>&gt;<\/span>\r\n          <span class=\"hljs-tag\">&lt;<span class=\"hljs-name\">p<\/span>&gt;<\/span>{item.description}<span class=\"hljs-tag\">&lt;\/<span class=\"hljs-name\">p<\/span>&gt;<\/span>\r\n        <span class=\"hljs-tag\">&lt;\/<span class=\"hljs-name\">div<\/span>&gt;<\/span>\r\n      ))}\r\n    <span class=\"hljs-tag\">&lt;\/<span class=\"hljs-name\">div<\/span>&gt;<\/span><\/span>\r\n  );\r\n};\r\n\r\n<span class=\"hljs-keyword\">export<\/span> <span class=\"hljs-keyword\">default<\/span> <span class=\"hljs-title class_\">MyComponent<\/span>;\r\n<\/code><\/pre>\n<p>In the code above, we use the fetch function to send a GET request to read the data.json file. Next, we use the .json() method to parse the response into JSON format data and store it in a state called data. Finally, we use the map function to iterate through the data array and render the title and description of each item on the page.<\/p>\n<p>Please note that the above code is a functional component that utilizes React&#8217;s Hooks API (useState and useEffect). Using functional components and Hooks API is the latest recommended practice in React.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>In React, you can use the fetch function to send a request and retrieve data from a JSON file. Here is an example code: import React, { useState, useEffect } from &#8216;react&#8217;; const MyComponent = () =&gt; { const [data, setData] = useState([]); useEffect(() =&gt; { fetch(&#8216;data.json&#8217;) \/\/ \u8bfb\u53d6data.json\u6587\u4ef6 .then(response =&gt; response.json()) \/\/ \u5c06\u54cd\u5e94\u89e3\u6790\u4e3aJSON\u683c\u5f0f .then(jsonData [&hellip;]<\/p>\n","protected":false},"author":14,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_import_markdown_pro_load_document_selector":0,"_import_markdown_pro_submit_text_textarea":"","footnotes":""},"categories":[1],"tags":[],"class_list":["post-18638","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>How does React read JSON data? - Blog - Silicon Cloud<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.silicloud.com\/blog\/how-does-react-read-json-data\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"How does React read JSON data?\" \/>\n<meta property=\"og:description\" content=\"In React, you can use the fetch function to send a request and retrieve data from a JSON file. Here is an example code: import React, { useState, useEffect } from &#039;react&#039;; const MyComponent = () =&gt; { const [data, setData] = useState([]); useEffect(() =&gt; { fetch(&#039;data.json&#039;) \/\/ \u8bfb\u53d6data.json\u6587\u4ef6 .then(response =&gt; response.json()) \/\/ \u5c06\u54cd\u5e94\u89e3\u6790\u4e3aJSON\u683c\u5f0f .then(jsonData [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/blog\/how-does-react-read-json-data\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - Silicon Cloud\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/SiliCloudGlobal\/\" \/>\n<meta property=\"article:published_time\" content=\"2024-03-15T17:22:10+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2024-03-21T13:47:16+00:00\" \/>\n<meta name=\"author\" content=\"Noah Thompson\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@SiliCloudGlobal\" \/>\n<meta name=\"twitter:site\" content=\"@SiliCloudGlobal\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Noah Thompson\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/www.silicloud.com\/blog\/how-does-react-read-json-data\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/www.silicloud.com\/blog\/how-does-react-read-json-data\/\"},\"author\":{\"name\":\"Noah Thompson\",\"@id\":\"https:\/\/www.silicloud.com\/blog\/#\/schema\/person\/2e83cc6ab9f60d36921c2d0f9f280f4a\"},\"headline\":\"How does React read JSON data?\",\"datePublished\":\"2024-03-15T17:22:10+00:00\",\"dateModified\":\"2024-03-21T13:47:16+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/www.silicloud.com\/blog\/how-does-react-read-json-data\/\"},\"wordCount\":128,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\/\/www.silicloud.com\/blog\/#organization\"},\"inLanguage\":\"en-US\"},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.silicloud.com\/blog\/how-does-react-read-json-data\/\",\"url\":\"https:\/\/www.silicloud.com\/blog\/how-does-react-read-json-data\/\",\"name\":\"How does React read JSON data? 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