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<output id="result"></output>
js
const comment = document.body.childNodes[1];
const output = document.getElementById("result");
output.value = comment.data;
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html
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js
const span = document.querySelector("span");
const textnode = span.nextSibling;
textnode.data = "ãã®ããã¹ã㯠'textnode.data' ã使ç¨ãã¦è¨å®ããã¾ããã";
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