30 lines
787 B
HTML
30 lines
787 B
HTML
<!DOCTYPE HTML>
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<html class="focus-within">
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<head>
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<style>
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* {
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border: none;
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}
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.focus-within {
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border: 2px solid green;
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}
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</style>
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</head>
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<body class="focus-within">
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<div id="root" class="focus-within">
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</div>
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<script>
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let rootElement = document.getElementById('root');
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let firstRoot = rootElement.attachShadow({mode: 'closed'});
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let insideDiv = document.createElement("div");
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insideDiv.innerText = "Foobar";
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insideDiv.className = "focus-within";
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let inputElement = document.createElement("input")
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inputElement.className = "focus-within";
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insideDiv.appendChild(inputElement);
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firstRoot.appendChild(insideDiv);
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inputElement.focus();
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</script>
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</body>
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</html>
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