зеркало из https://github.com/mozilla/gecko-dev.git
38 строки
1.1 KiB
HTML
38 строки
1.1 KiB
HTML
<!DOCTYPE html>
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<html>
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<body>
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<fieldset id="outer">
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<fieldset id="inner">
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</fieldset>
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</fieldset>
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</body>
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</html>
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<script>
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function appendTextareaToFieldset(fieldset) {
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var textarea = document.createElement("textarea");
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textarea.setAttribute("required", "");
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fieldset.appendChild(textarea);
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}
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var innerFieldset = document.getElementById('inner');
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var outerFieldset = document.getElementById('outer');
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var fieldset = document.createElement('fieldset');
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appendTextareaToFieldset(fieldset);
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appendTextareaToFieldset(fieldset);
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appendTextareaToFieldset(fieldset);
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appendTextareaToFieldset(fieldset);
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// Adding a fieldset to a nested fieldset.
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innerFieldset.appendChild(fieldset);
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appendTextareaToFieldset(fieldset);
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appendTextareaToFieldset(fieldset);
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// This triggers mInvalidElementsCount checks in outer fieldset.
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appendTextareaToFieldset(outerFieldset);
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// Removing a fieldset from a nested fieldset.
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innerFieldset.removeChild(fieldset);
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// This triggers mInvalidElementsCount checks in outer fieldset.
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appendTextareaToFieldset(outerFieldset);
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</script>
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