Masayuki Nakano
e5f40f033b
The null-check should be done before using `IsBlockElement`. Differential Revision: https://phabricator.services.mozilla.com/D271740
26 lines
440 B
HTML
26 lines
440 B
HTML
<!doctype html>
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<html>
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<head>
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<meta charset="utf-8">
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<script>
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"use strict";
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document.addEventListener("DOMContentLoaded", () => {
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document.designMode = "on";
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document.execCommand("selectAll");
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document.execCommand("subscript");
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document.execCommand("insertHTML");
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}, {once: true});
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</script>
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</head>
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<body>
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<time dir="auto">
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A
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<canvas>
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<textarea dir="rtl">
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</textarea>
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</canvas>
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</time>
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</body>
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</html>
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