JS实现的JSON数组去重算法示例

paylist:[{paymode:'1',payname:"现金"，paymoney:"20"},{paymode:'2',payname:"支付宝"，paymoney:"50"},{paymode:'1',payname:"现金"，paymoney:"40"}]

function UniquePay(paylist){  var payArr = [paylist[0]];  for(var i = 1; i < paylist.length; i++){    var payItem = paylist[i];    var repeat = false;    for (var j = 0; j < payArr.length; j++) {     if (payItem.paymode == payArr[j].paymode) {        payArr[j].paymoney = parseFloat(payArr[j].paymoney)+parseFloat(payItem.paymoney);         repeat = true;         break;     }   }       if (!repeat) {         payArr.push(payItem);       }  }  return payArr;}

/* * JSON数组去重 * @param: [array] json Array * @param: [string] 唯一的key名，根据此键名进行去重 */function uniqueArray(array, key){  var result = [array[0]];  for(var i = 1; i < array.length; i++){    var item = array[i];    var repeat = false;    for (var j = 0; j < result.length; j++) {      if (item[key] == result[j][key]) {        repeat = true;        break;      }    }    if (!repeat) {      result.push(item);    }  }  return result;}