JSON数组去重算法

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需求描述：去除JSON数组中paymode字段相同的项，并将paymoney累加。

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;}

通用的JSON数组去重

/* * 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;}

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