<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Js逐字顯示</title>
<style>
.d{
height: 100px;
width: 100px;
border: 1px solid black;
margin-left: 100px;
}
</style>
</head>
<body onLoad="show()">
<div id="txt" class="d"></div>
<script language="javascript">
content = "運動之後有三忌：1坐下休息；2立即洗澡；3進食大量甜食，以及涼水（要喝溫開水）";
i = 0;
function show() {
str = content.substr(0, i);
txt.innerHTML = str + "_";
i++;
if (i > content.length) i = 0;
setTimeout("show()", 200);
}
</script>
</body>
</html>
