onkeyup小练习

<!DOCTYPE html>

<html lang="en">

<head>

    <meta charset="UTF-8">

    <title>输入验证码大写</title>

</head>

<body>

<form action="">

    <p>name:</p>

    <p><input type="text"></p>

    <p>密码:</p>

    <p><input type="text"></p>

    <p>验证码</p>

    <p><input type="text" id="verify"></p>

    <p><input type="submit" value="ok"></p>

</form>

<script>

    var verify = document.getElementById("verify");

    verify.onkeyup = function(){

        var val = this.value;

        var val1 = val.toUpperCase();

        this.value = val1;

    };

</script>

</body>

</html>
巴特西

onkeyup小练习

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