HTMLElement: isContentEditable 属性

<p id="firstParagraph">Uneditable Paragraph</p>
<p id="secondParagraph" contenteditable="true">Editable Paragraph</p>

<p id="infoText1">Is the first paragraph editable?</p>
<p id="infoText2">Is the second paragraph editable?</p>

const firstParagraph = document.getElementById("firstParagraph");
const secondParagraph = document.getElementById("secondParagraph");

const infoText1 = document.getElementById("infoText1");
const infoText2 = document.getElementById("infoText2");

infoText1.textContent += ` ${firstParagraph.isContentEditable}`;
infoText2.textContent += ` ${secondParagraph.isContentEditable}`;