<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title></title>
<script>
window.onload = function () {
var show = document.getElementById('show');
show.value = 'input赋值内容';
}
</script>
</head>
<body>
<input id="show" />
</body>
</html>