set cursor with javascript code example

Example 1: javascript how to set cursor for whole page

document.html.style.cursor = "";

Example 2: style.cursor javascript

<p id="demo" style="cursor:wait;">Mouse over me.</p>
<script>
    parag = document.getElementById("demo");
    alert(parag.style.cursor);
    parag.style.cursor = "crosshair";
    parag.style.cursor = "help";
    parag.style.cursor = "pointer";
}
</script>