对json同属性字段压缩

function jsonPack(obj,ifOrder) {

    var result = []

    // var nameArr = Object.keys(obj[0]); 非有序遍历

    var nameArr = []

    var arr = JSON.stringify(obj[0]).replace(/^{|}$/g,'').split(',')

    nameArr = arr.map((item) => {

        return item.split(':')[0].replace(/"/g,'')

    })

    if (ifOrder == 1) {

        nameArr.sort()

    }

    result.push(nameArr)

    obj.forEach(item => {

        let tpmArr = []

        for (var i = 0; i < nameArr.length; i++) {

            tpmArr.push(item[nameArr[i]])

        }

        result.push(tpmArr)

    })

    console.log(result);

}

var obj = [{b:1,a:2,c:3},{a:1,b:2,c:3},{c:1,a:2,b:3}]

var abc = [{sha:1,hello:2,c:3},{hello:4,c:10,sha:2}]

jsonPack(obj)

jsonPack(abc)