请教高手,告诉我下面每句话是干什么的
初学Ext,实在是看不懂了!
Ext.data.Store.prototype.applySort = function(){
if(this.sortInfo && !this.remoteSort){
var s = this.sortInfo, f = s.field;
var st = this.fields.get(f).sortType;
var fn = function(r1, r2){
var v1 = st(r1.data[f]), v2 = st(r2.data[f]);
if(typeof(v1) == "string"){
return v1.localeCompare(v2);
}
return v1 > v2 ? 1 : (v1 < v2 ? -1 : 0);
};
this.data.sort(s.direction, fn);
if(this.snapshot && this.snapshot != this.data){
this.snapshot.sort(s.direction, fn);
}
}
};