{"id":189,"date":"2019-08-09T17:19:38","date_gmt":"2019-08-09T17:19:38","guid":{"rendered":"https:\/\/www.369usa.com\/blog\/?p=189"},"modified":"2019-08-09T17:22:03","modified_gmt":"2019-08-09T17:22:03","slug":"react-ref","status":"publish","type":"post","link":"https:\/\/www.369usa.com\/blog\/react-ref\/","title":{"rendered":"React Ref"},"content":{"rendered":"<p>Ref is just a way to manipulate the DOM just in a similar manner as jQuery.<br \/>\nSimple example:<\/p>\n<pre>\r\n\r\nimport React from &quot;react&quot;;\r\nimport ReactDOM from &quot;react-dom&quot;;\r\n\r\nclass App extends React.Component {\r\n  constructor(props) {\r\n    super(props);\r\n    this.myRef = React.createRef();\r\n    this.focusTextInput = this.focusTextInput.bind(this);\r\n  }\r\n  focusTextInput() {\r\n    this.myRef.current.focus();\r\n    this.myRef.current.value = &quot;WORLD&quot;;\r\n  }\r\n  render() {\r\n    return (\r\n      &lt;div&gt;\r\n        &lt;div&gt;HELLO&lt;\/div&gt;\r\n        &lt;div&gt;\r\n          &lt;input type=&quot;text&quot; ref={this.myRef} \/&gt;\r\n        &lt;\/div&gt;\r\n        &lt;div&gt;\r\n          &lt;button onClick={this.focusTextInput}&gt;Focus!&lt;\/button&gt;\r\n        &lt;\/div&gt;\r\n      &lt;\/div&gt;\r\n    );\r\n  }\r\n}\r\n\r\nconst rootElement = document.getElementById(&quot;root&quot;);\r\nReactDOM.render(&lt;App \/&gt;, rootElement);\r\n\r\n<\/pre>\n","protected":false},"excerpt":{"rendered":"<p>Ref is just a way to manipulate the DOM just in a similar manner as jQuery. Simple example: import React from &quot;react&quot;; import ReactDOM from &quot;react-dom&quot;; class App extends React.Component { constructor(props) { super(props); this.myRef = React.createRef(); this.focusTextInput = this.focusTextInput.bind(this); } focusTextInput() { this.myRef.current.focus(); this.myRef.current.value = &quot;WORLD&quot;; } render() { return ( &lt;div&gt; &lt;div&gt;HELLO&lt;\/div&gt; &lt;div&gt; &hellip; <a href=\"https:\/\/www.369usa.com\/blog\/react-ref\/\" class=\"more-link\">Continue reading<span class=\"screen-reader-text\"> &#8220;React Ref&#8221;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-189","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v23.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>React Ref - \u7ebd\u7ea6\u7f51\u7ad9\u8bbe\u8ba1\u535a\u5ba2<\/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.369usa.com\/blog\/react-ref\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"React Ref - \u7ebd\u7ea6\u7f51\u7ad9\u8bbe\u8ba1\u535a\u5ba2\" \/>\n<meta property=\"og:description\" content=\"Ref is just a way to manipulate the DOM just in a similar manner as jQuery. Simple example: import React from &quot;react&quot;; import ReactDOM from &quot;react-dom&quot;; class App extends React.Component { constructor(props) { super(props); this.myRef = React.createRef(); this.focusTextInput = this.focusTextInput.bind(this); } focusTextInput() { this.myRef.current.focus(); this.myRef.current.value = &quot;WORLD&quot;; } render() { return ( &lt;div&gt; &lt;div&gt;HELLO&lt;\/div&gt; &lt;div&gt; &hellip; Continue reading &quot;React Ref&quot;\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.369usa.com\/blog\/react-ref\/\" \/>\n<meta property=\"og:site_name\" content=\"\u7ebd\u7ea6\u7f51\u7ad9\u8bbe\u8ba1\u535a\u5ba2\" \/>\n<meta property=\"article:published_time\" content=\"2019-08-09T17:19:38+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2019-08-09T17:22:03+00:00\" \/>\n<meta name=\"author\" content=\"darkersss\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"darkersss\" \/>\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\":\"WebPage\",\"@id\":\"https:\/\/www.369usa.com\/blog\/react-ref\/\",\"url\":\"https:\/\/www.369usa.com\/blog\/react-ref\/\",\"name\":\"React Ref - \u7ebd\u7ea6\u7f51\u7ad9\u8bbe\u8ba1\u535a\u5ba2\",\"isPartOf\":{\"@id\":\"https:\/\/www.369usa.com\/blog\/#website\"},\"datePublished\":\"2019-08-09T17:19:38+00:00\",\"dateModified\":\"2019-08-09T17:22:03+00:00\",\"author\":{\"@id\":\"https:\/\/www.369usa.com\/blog\/#\/schema\/person\/1c260c42af4aadda7f89a0081f6591b6\"},\"breadcrumb\":{\"@id\":\"https:\/\/www.369usa.com\/blog\/react-ref\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/www.369usa.com\/blog\/react-ref\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/www.369usa.com\/blog\/react-ref\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/www.369usa.com\/blog\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"React Ref\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/www.369usa.com\/blog\/#website\",\"url\":\"https:\/\/www.369usa.com\/blog\/\",\"name\":\"369\u7ebd\u7ea6\u7f51\u7ad9\u8bbe\u8ba1\",\"description\":\"\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/www.369usa.com\/blog\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Person\",\"@id\":\"https:\/\/www.369usa.com\/blog\/#\/schema\/person\/1c260c42af4aadda7f89a0081f6591b6\",\"name\":\"darkersss\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/www.369usa.com\/blog\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/secure.gravatar.com\/avatar\/2c538d84b753eed6f6f714becf9b3955?s=96&d=mm&r=g\",\"contentUrl\":\"https:\/\/secure.gravatar.com\/avatar\/2c538d84b753eed6f6f714becf9b3955?s=96&d=mm&r=g\",\"caption\":\"darkersss\"}}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"React Ref - \u7ebd\u7ea6\u7f51\u7ad9\u8bbe\u8ba1\u535a\u5ba2","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.369usa.com\/blog\/react-ref\/","og_locale":"en_US","og_type":"article","og_title":"React Ref - \u7ebd\u7ea6\u7f51\u7ad9\u8bbe\u8ba1\u535a\u5ba2","og_description":"Ref is just a way to manipulate the DOM just in a similar manner as jQuery. 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