Javascript计算二维数组重复值示例代码

[[\'error\',3],[\'error\',5],[\'error\',6],[\'true\',3],[\'true\',1]]

[[\'error\',14],[\'true\',4]]

var arr = [[\'error\',3],[\'error\',5],[\'error\',6],[\'true\',3],[\'true\',1]];
var obj = {};
var result = [];
arr.forEach(function(arr){
 obj[arr[0]] = obj[arr[0]]? obj[arr[0]] + arr[1] : arr[1];
});
for (var i in obj){
 result.push([i,obj[i]])
}