element.contentEditable

ようわからん

HTML

<div>edit me</div>
<div contenteditable="true">erite 1<div>eritw 1</div><div>1</div><div>123</div><div><br></div><div><br></div><div>213</div></div>
<div contenteditable>edit me</div>
<div contenteditable="false">edit me</div>

<textarea>edit me</textarea>
<textarea contenteditable="true">edit me</textarea>
<textarea contenteditable>edit me</textarea>
<textarea contenteditable="false">edit me</textarea>

JavaScript

var div = document.getElementsByTagName("div");
var ta = document.getElementsByTagName("textarea");

console.log(div[0].contentEditable); //inherit
console.log(div[1].contentEditable); //true
console.log(div[2].contentEditable); //true
console.log(div[3].contentEditable); //false

console.log(ta[0].contentEditable); //inherit
console.log(ta[1].contentEditable); //true
console.log(ta[2].contentEditable); //true
console.log(ta[3].contentEditable); //false