<html>
<head>
<body style="background:#267754"/>
<title>mi pagina</title>
<script>alert ("hola mundo");
function saludo(){
alert ("bienvenido " + document.getElementById("txtn").value);
}
</script>
</head>
<body>
<h1>hola mundo </h1>
<form>
<input type="text" id="txtn"> </input>
<input type="button" onclick="saludo()" value="ejecutar"</input>
</form>
</body>
</html>
