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Building a React-Like Library
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| <html> | |
| <body> | |
| <div id="root"></div> | |
| <!-- First article on building a react-like library --> | |
| <script src="./static-dom.js"></script> | |
| <body> | |
| </html> |
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| // Building a React-Like Library: Static Virtual DOM | |
| const render = (vnode, parent) => { | |
| // manage string type | |
| if (typeof vnode === "string") { | |
| return parent.appendChild(document.createTextNode(vnode)); | |
| } | |
| // create HTML element | |
| const element = document.createElement(vnode.tag); | |
| // set attributes | |
| if (vnode.props) { | |
| Object.keys(vnode.props).forEach(key => { | |
| const value = vnode.props[key]; | |
| element.setAttribute(key, value); | |
| }); | |
| } | |
| // iterate over children and render them | |
| if (vnode.children) { | |
| vnode.children.forEach(child => render(child, element)); | |
| } | |
| // append the element created | |
| return parent.appendChild(element); | |
| }; | |
| const vDom = { | |
| tag: "div", | |
| props: {}, | |
| children: [ | |
| { | |
| tag: "h1", | |
| props: { id: "title" }, | |
| children: ["Hello, World!"] | |
| }, | |
| { | |
| tag: "p", | |
| props: {}, | |
| children: ["I'm learning about virtual DOM"] | |
| } | |
| ] | |
| }; | |
| render(vDom, document.getElementById("root")); |
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