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[assert] element.previousSibling

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Witold Filipczyk 2024-04-28 16:03:00 +02:00
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test/ecmascript/assert/element.previousSibling.html Normal file
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<!DOCTYPE html>
<html>
<body>
<p>Example list:</p>
<ul><li id="item1">Coffee (first li)</li><li id="item2">Tea (second li)</li></ul>
<p>Click the button to get the HTML content of the previous sibling of the second list item.</p>
<button onclick="myFunction()">Try it</button>
<p><strong>Note:</strong> Whitespace inside elements is considered as text, and text
is considered as nodes.</p>
<p>If you add whitespace between the two li elements, the result will be "undefined".</p>
<p id="demo"></p>
<script>
function myFunction() {
var x = document.getElementById("item2").previousSibling.innerHTML;
console.assert(x === 'Coffee (first li)', 'Coffee');
}
console.error("element.previousSibling.html");
myFunction();
console.exit(0);
</script>
</body>
</html>