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javascriptpr.html
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta http-equiv="X-UA-Compatible" content="IE=edge" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>자바스크립트 연습</title>
</head>
<body>
<span id="text"></span>
10 / 2
<p>
<input type="button" value="로그인" onclick="clearInput()" />
</p>
<p>
<input type="text" id="id" placeholder="ID" />
</p>
<p>
<input type="password" id="pw" />
</p>
<div id="exam"></div>
</body>
<script>
let B = "span";
let spanTextZone = document.getElementById("text");
let idInput = document.getElementById("id");
let pwInput = document.getElementById("pw");
pwInput.placeholder = "PW";
function clearInput() {
idInput.value = "";
pwInput.value = "";
}
document.write(document.querySelector(".exam"));
spanTextZone.innerText = document.querySelector(".exam");
spanTextZone.innerText = B;
document.write(10 / 2);
document.write("<br/>");
var A = 10;
A = 20;
document.write(A);
</script>
</html>