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屿§ã夿´ããããã¡ãã£ã¢è¦ç´ èªä½ã®ä¸ã«ãã¹ãããã¦ãã <source>
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load()
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ã«ãã£ã¦è¿ãããæªå¦çã®ãããã¹ (Promise
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DOMException
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abort
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ã® <video>
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const mediaElem = document.querySelector("video");
mediaElem.load();
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