//html
<body>
<div id="div"></div>
</body>
//javascript
<script>
var div = document.getElementById("div");
div.innerHTML = "∞"
</script>
//html
<body>
<div id="div"></div>
</body>
//javascript
<script>
var div = document.getElementById("div");
div.innerHTML = "∞"
</script>