elgrim312 · October 3, 2017 15:06
diff --git a/js input b/js input
 <!doctype html>
 <html lang="fr">
 <head>
    <meta charset="UTF-8">
    <meta name="viewport"
          content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
 </head>
 <body>
 <form action="">
    <label for="name">Prénom</label>
    <input type="text" id="name" class="input" onkeyup="Isempty()">

    <label for="surname">Nom</label>
    <input type="text" id="surname" onkeyup="Isempty()">

    <input type="submit" disabled id="submit">
 </form>
 <script type="application/javascript">
    function Isempty() {
        var name  = document.getElementById("name");
        var firstname = document.getElementById("surname");
        var submit = document.getElementById("submit");

        if (name.value !== "" && firstname.value !== "") {
            submit.removeAttribute("disabled");
        }
    }

 </script>
 </body>
 </html>
	<!doctype html>
	<html lang="fr">
	<head>
	<meta charset="UTF-8">
	<meta name="viewport"
	content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
	<meta http-equiv="X-UA-Compatible" content="ie=edge">
	<title>Document</title>
	</head>
	<body>
	<form action="">
	<label for="name">Prénom</label>
	<input type="text" id="name" class="input" onkeyup="Isempty()">

	<label for="surname">Nom</label>
	<input type="text" id="surname" onkeyup="Isempty()">

	<input type="submit" disabled id="submit">
	</form>
	<script type="application/javascript">
	function Isempty() {
	var name = document.getElementById("name");
	var firstname = document.getElementById("surname");
	var submit = document.getElementById("submit");

	if (name.value !== "" && firstname.value !== "") {
	submit.removeAttribute("disabled");
	}
	}

	</script>
	</body>
	</html>