如何提取數(shù)組中的字段，然后添加新的字段，獲取數(shù)據(jù)如下：var data = [{"id":"1","name":"華為","data":"25u6s8f545d3"},{"id":"2","name":"小米","data":"cd58de9d3c5d"},];我想獲得的數(shù)據(jù)格式如下：var data = [{"id":"1","name":"華為","data":"25u6s8f545d3","mac":"25:u6:s8:f5:45:d3"},{"id":"2","name":"小米","data":"cd58de9d3c5d","mac":"cd:58:de:9d:3c:5d"},];我現(xiàn)在方法如下：for (var i = 0; i < data.length; i++) {    var mac = data[i].data.toUpperCase();        mac1 = mac.substring(0, 2);        mac2 = mac.substring(2, 4);        mac3 = mac.substring(4, 6);        mac4 = mac.substring(6, 8);        mac5 = mac.substring(8, 10);        mac6 = mac.substring(10, 12);        var mac = mac1 + ':' + mac2 + ':' + mac3 + ':' + mac4 + ':' + mac5 + ':' + mac6;        data[i].mac = mac; };請教下有沒有更好的方法？我覺得自己方法有點(diǎn)爛。