标签：rank

写的烂，不要见怪。。

<script>
function QRank(scores){
this._scores=this._rank = 0;
this._max = 10000;
this.setScore(scores);
}
QRank.prototype.setScore = function(scores){
this._scores = parseInt(scores);
}
QRank.prototype.getScore = function(){
return this._scores;
}
QRank.prototype.setRank = function(){
//this._rank = Math.floor(Math.sqrt(this._scores+4));
var score = this.getScore();
var j=0;
for(var i=0;i<this._max;i++){
if(this.getScore() < j){
this._rank = (i-1);
break;
}
j+=(5+i*2);
}
}
QRank.prototype.getRank = function(){
return this._rank;
}
QRank.prototype.getStar = function(){
var rank;
if((rank = this.getRank()) == 0){
this.setRank();
rank = this.getRank();
}
var rank4 = rank.toString(4).split("").reverse(); //convert
var icon = '';
var iconarr = ['☆','★','○','●','$']; //对应，星星，月亮，太阳，皇冠，美元对应未知。
for (var i in rank4){
icon = iconarr[i].repeat(rank4[i]) + icon;
}
document.write(icon);
}
String.prototype.repeat = function(num){
str = [];
for (var i=0;i <num ; i++){
str.push(this.toString().split(""));
}
return str.join("");
}
var q = new QRank(1000);
q.getStar();
alert(q.getRank());
</script>