{"id":18639,"date":"2024-03-15T17:22:15","date_gmt":"2024-03-15T17:22:15","guid":{"rendered":"https:\/\/www.silicloud.com\/blog\/how-is-the-virtual-dom-created-in-react\/"},"modified":"2024-03-21T13:47:25","modified_gmt":"2024-03-21T13:47:25","slug":"how-is-the-virtual-dom-created-in-react","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/blog\/how-is-the-virtual-dom-created-in-react\/","title":{"rendered":"How is the virtual DOM created in React?"},"content":{"rendered":"<p>In React, creating a virtual DOM can be achieved by calling the React.createElement function, which takes three parameters: the tag name, an object of attributes, and children elements.<\/p>\n<p>For example, to create a virtual DOM element containing text content, you can use the following code:<\/p>\n<pre class=\"post-pre\"><code><span class=\"hljs-keyword\">const<\/span> element = <span class=\"hljs-title class_\">React<\/span>.<span class=\"hljs-title function_\">createElement<\/span>(<span class=\"hljs-string\">'div'<\/span>, <span class=\"hljs-literal\">null<\/span>, <span class=\"hljs-string\">'Hello, React!'<\/span>);\r\n<\/code><\/pre>\n<p>This will create a div element with the text content &#8220;Hello, React!&#8221;.<\/p>\n<p>You can also create virtual DOM elements with properties and child elements by passing an attributes object and children. For example:<\/p>\n<pre class=\"post-pre\"><code><span class=\"hljs-keyword\">const<\/span> element = <span class=\"hljs-title class_\">React<\/span>.<span class=\"hljs-title function_\">createElement<\/span>(<span class=\"hljs-string\">'div'<\/span>, { <span class=\"hljs-attr\">className<\/span>: <span class=\"hljs-string\">'container'<\/span> }, \r\n    <span class=\"hljs-title class_\">React<\/span>.<span class=\"hljs-title function_\">createElement<\/span>(<span class=\"hljs-string\">'h1'<\/span>, <span class=\"hljs-literal\">null<\/span>, <span class=\"hljs-string\">'Hello, React!'<\/span>),\r\n    <span class=\"hljs-title class_\">React<\/span>.<span class=\"hljs-title function_\">createElement<\/span>(<span class=\"hljs-string\">'p'<\/span>, <span class=\"hljs-literal\">null<\/span>, <span class=\"hljs-string\">'This is a paragraph.'<\/span>)\r\n);\r\n<\/code><\/pre>\n<p>This will create a div element with the className attribute and two child elements.<\/p>\n<p>In actual development, we often use JSX syntax to create virtual DOM, which can more intuitively represent the structure and properties of components. The above example can be simplified using JSX syntax as follows:<\/p>\n<pre class=\"post-pre\"><code><span class=\"hljs-keyword\">const<\/span> element = (\r\n    <span class=\"language-xml\"><span class=\"hljs-tag\">&lt;<span class=\"hljs-name\">div<\/span> <span class=\"hljs-attr\">className<\/span>=<span class=\"hljs-string\">\"container\"<\/span>&gt;<\/span>\r\n        <span class=\"hljs-tag\">&lt;<span class=\"hljs-name\">h1<\/span>&gt;<\/span>Hello, React!<span class=\"hljs-tag\">&lt;\/<span class=\"hljs-name\">h1<\/span>&gt;<\/span>\r\n        <span class=\"hljs-tag\">&lt;<span class=\"hljs-name\">p<\/span>&gt;<\/span>This is a paragraph.<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><\/span>\r\n);\r\n<\/code><\/pre>\n<p>This will create a virtual DOM element similar to the example above.<\/p>\n<p>It is important to note that although the React.createElement function can directly create virtual DOM elements, in actual development, we typically use JSX syntax because it is more readable and easier to write. Compilation tools (such as Babel) will convert JSX code into React.createElement function calls.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>In React, creating a virtual DOM can be achieved by calling the React.createElement function, which takes three parameters: the tag name, an object of attributes, and children elements. For example, to create a virtual DOM element containing text content, you can use the following code: const element = React.createElement(&#8216;div&#8217;, null, &#8216;Hello, React!&#8217;); This will create [&hellip;]<\/p>\n","protected":false},"author":5,"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-18639","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 is the virtual DOM created in React? - 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-is-the-virtual-dom-created-in-react\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"How is the virtual DOM created in React?\" \/>\n<meta property=\"og:description\" content=\"In React, creating a virtual DOM can be achieved by calling the React.createElement function, which takes three parameters: the tag name, an object of attributes, and children elements. 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