Json 数组排序

/*********************************************Json 数组排序 *********************************************/
function PlayDesc(json,desc,type){

if(json){
if(desc == "desc" && type == "takeMath"){
return json.sort(function(a,b){return a.takeMath<b.takeMath?1:-1});
};

if(desc == "asc" && json != "takeMath"){
return json.sort(function(a,b){return a.takeMath>b.takeMath?1:-1});
};

if(desc == "desc" && type == "hostLevel"){
return json.sort(function(a,b){return a.hostLevel<b.hostLevel?1:-1});
};

if(desc == "asc" && json != "hostLevel"){
return json.sort(function(a,b){return a.hostLevel>b.hostLevel?1:-1});
};
}
};