js生成签名

var timestamp = new Date().getTime().toString();
var pzKeyArr =[{name:"walletId",value:walletId},{name:"nonceStr",value:timestamp},{name:"money",value:(totalPrice*100)},{name:"goodsName",value:encodeURIComponent(goodsname)}];
var sign = getSign(pzKeyArr);

function getSign(pzKeyArr){
   var PZKEY="aLBZ0NP0aFXH60bQbxk0ktibbbnbbn";
   var compare = function (obj1, obj2) {
           var val1 = obj1.name;
           var val2 = obj2.name;
           if (val1 < val2) {
               return -1;
           } else if (val1 > val2) {
               return 1;
           } else {
               return 0;
           }            
       } 
       pzKeyArr.sort(compare);
       var signSrc = "";
       for(var i=0; i<pzKeyArr.length; i++){
           signSrc += pzKeyArr[i].name + "=" + pzKeyArr[i].value + "&";
       }
       signSrc += "key="+PZKEY;
       return calcMD5(signSrc).toUpperCase();
}