String.prototype.trim = function() {
return this.replace(/^\s*|\s(?=\s)|\s*$/g, "");
};

Array.prototype.clean = function() {
for (var i = 0, loopCnt = this.length; i < loopCnt; i++) { this[i] = this[i].trim(); } }; Array.prototype.has = function(value) { for (var i = 0, loopCnt = this.length; i < loopCnt; i++) { if (this[i].trim() == value) { return true; } } return false; }; var stu = prompt("List").split(";"); stu.clean(); var inputs=document.body.getElementsByTagName('input'); for(var i=0;i