Here is a small but useful function to generate a string with a random number of characters with the help of javascript.
function randomString(min, max) {
var chars = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXTZabcdefghiklmnopqrstuvwxyz";
if(!min) min = 7;
if(!max) max = 10;
var string_length = Math.floor(Math.random() * (max - min + 1) + min);
var randomstring = '';
for (var i=0; i < string_length ; i++) {
var rnum = Math.floor(Math.random() * chars.length);
randomstring += chars.substring(rnum,rnum+1);
}
return randomstring;
}
