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26 lines
455 B
HTML
26 lines
455 B
HTML
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<!DOCTYPE html>
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<html>
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<body>
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<div id="a" data-a="1" data-b="abc" data-cd="123"></div>
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<button onclick="myFunction()">Try it</button>
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<p id="demo"></p>
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<script>
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function myFunction() {
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var div = document.getElementById('a');
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console.assert(div.dataset.b === 'abc', 'abc');
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div.dataset.b = '123';
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console.assert(div.dataset.b === '123', '123');
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}
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console.error('element.dataset.html');
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myFunction();
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console.exit();
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</script>
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</body>
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</html>
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