getUniqueNumberId

function getNumberId(prefix) {
    var p = prefix || "i";

    function shuffle(str) {
        var a = str.split("");
        var n = a.length;
        for (var i = n - 1; i > 0; i--) {
            var j = Math.floor(Math.random() * (i + 1));
            var tmp = a[i];
            a[i] = a[j];
            a[j] = tmp;
        }
        return a.join("");
    }
    var str = new Date().getTime() + (Math.random() * 999 + 1000).toFixed() //string
    return p+shuffle(str)
}

function getUniqueNumber() {

    function shuffle(str) {
        var a = str.split("");
        var n = a.length;
        for (var i = n - 1; i > 0; i--) {
            var j = Math.floor(Math.random() * (i + 1));
            var tmp = a[i];
            a[i] = a[j];
            a[j] = tmp;
        }
        return a.join("");
    }
    var str = new Date().getTime() + (Math.random() * 999 + 1000).toFixed() //string
    return Number.parseInt(shuffle(str));
}

function getUniqueID(prefix, length) {
    var p = prefix || "i";
    var len = length || 10;

    function shuffle(str) {
        var a = str.split("");
        var n = a.length;
        for (var i = n - 1; i > 0; i--) {
            var j = Math.floor(Math.random() * (i + 1));
            var tmp = a[i];
            a[i] = a[j];
            a[j] = tmp;
        }
        return a.join("");
    }
    var str = new Date().getTime() + (Math.random() * 999 + 1000).toFixed() //string
    var n = Number.parseInt(shuffle(str));
    return (p + n.toString(36)).substring(0, len)
}