exam 2
HTML
Random List:<br/>
<input type="button" id="stack" value=" generate" onClick="random();" />
<div id="output1"></div>
<br/>
JavaScript
function random(){
var s= "";
var chars = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
for(var i = 0; i < 4; i++){
s+=chars.charAt(Math.floor(Math.random() * chars.length));
}
document.getElementById('output1').innerHTML = s;
}