og image in typescript

To set an Open Graph (OG) image in TypeScript, you can use the meta tags in the HTML header. The meta tag og:image is used to specify the OG image URL. Here's an example HTML code snippet:


<head>
  <title>My Webpage</title>
  <meta property="og:title" content="My Webpage Title"/>
  <meta property="og:description" content="Description of my webpage"/>
  <meta property="og:image" content="https://example.com/image.jpg"/>
  <meta property="og:image:type" content="image/jpeg"/>
  <meta property="og:image:width" content="1200"/>
  <meta property="og:image:height" content="630"/>
</head>
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In this example, the OG image URL is set to "https://example.com/image.jpg", but you can replace it with your own image URL. The og:image:type, og:image:width and og:image:height properties are optional, but they are useful in providing additional information about the image to crawlers.

You can add these meta tags dynamically in TypeScript using the following code:


index.ts
const head = document.head;
const ogTitle = document.createElement('meta');
ogTitle.setAttribute('property', 'og:title');
ogTitle.setAttribute('content', 'My Webpage Title');
head.appendChild(ogTitle);

const ogDescription = document.createElement('meta');
ogDescription.setAttribute('property', 'og:description');
ogDescription.setAttribute('content', 'Description of my webpage');
head.appendChild(ogDescription);

const ogImage = document.createElement('meta');
ogImage.setAttribute('property', 'og:image');
ogImage.setAttribute('content', 'https://example.com/image.jpg');
head.appendChild(ogImage);

const ogImageType = document.createElement('meta');
ogImageType.setAttribute('property', 'og:image:type');
ogImageType.setAttribute('content', 'image/jpeg');
head.appendChild(ogImageType);

const ogImageWidth = document.createElement('meta');
ogImageWidth.setAttribute('property', 'og:image:width');
ogImageWidth.setAttribute('content', '1200');
head.appendChild(ogImageWidth);

const ogImageHeight = document.createElement('meta');
ogImageHeight.setAttribute('property', 'og:image:height');
ogImageHeight.setAttribute('content', '630');
head.appendChild(ogImageHeight);
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This code creates the necessary meta tags dynamically and appends them to the HTML header. Make sure to run this code after the DOM has loaded, so that the elements have been created before they are appended.

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