In structured data markup, I want to insert publish date with java script.is there a way to do this?
example schema;
<script type="application/ld+json">
{
"@context": "https://schema.org",
"@type": "NewsArticle",
"headline": "Article headline",
"image": [
"https://example.com/photos/1x1/photo.jpg",
"https://example.com/photos/4x3/photo.jpg",
"https://example.com/photos/16x9/photo.jpg"
],
"datePublished": "+ date variable +",
"author": [{
"@type": "Person",
"name": "Jane Doe",
"url": "http://example.com/profile/janedoe123"
},{
"@type": "Person",
"name": "John Doe",
"url": "http://example.com/profile/johndoe123"
}]
}
</script>
I have to take the date inside the time tag on the page and put it in the schema with javascript.
<time datetime="2021-02-24T12:11:00+03:00">2021-02-24T12:11:00+03:00</time>
I removed the datePublished because it's not valid markup if there are JS variables, we should add it completely using JS, this is valid even if Javascript is disabled.
<script id='structured-data' type="application/ld+json">
{
"@context": "https://schema.org",
"@type": "NewsArticle",
"headline": "Article headline",
"image": ["https://example.com/photos/1x1/photo.jpg", "https://example.com/photos/4x3/photo.jpg", "https://example.com/photos/16x9/photo.jpg"],
"author": [{
"@type": "Person",
"name": "Jane Doe",
"url": "http://example.com/profile/janedoe123"
},{
"@type": "Person",
"name": "John Doe",
"url": "http://example.com/profile/johndoe123"
}]
}
</script>
and to add datePublished you can use this
let timeValue = document.querySelector('time').dateTime;
let structuredData = document.getElementById('structured-data');
let parsedSD = JSON.parse(structuredData.innerText);
parsedSD.datePublished = timeValue;
structuredData.innerText = JSON.stringify(parsedSD)