<!DOCTYPE html>
<html lang=”en”>
<head>
<meta charset=”UTF-8″>
<title>output的用法</title>
</head>
<body>
<form action=”” id=”myform” οninput=”sumnumber.value=parseInt(number1.value)+parseInt(number2.value)”>
<input type=”number” name=”number1″>+
<input type=”number” name=”number2″>=
<!– <input type=”number” id=”number1″>+
<input type=”number” id=”number2″>= –>
<output name=”sumnumber” for=”number1 number2″></output>
</form>
</body>
</html>
转载于:https://www.cnblogs.com/houweidong/p/7532110.html