拆分数组并获取值[Rreact native]

Question

我正在开发react本机应用程序，我想拆分阵列，但我不明白如何做到这一点，

[{"dtCreatedOn": "2021-06-01T03:28:21.450Z", "flgIsActive": true, "inTagId": 2, "stTags": "Song"}, "3", "6", "7", "8"]

我有类似于上面数组的东西，我想得到TagId中的的值，以及最后一个整数值"3〃"6〃"7〃"8〃来自该阵列

Answer 1

var a = [{"dtCreatedOn": "2021-06-01T03:28:21.450Z", "flgIsActive": true, "inTagId": 2, "stTags": "Song"}, "3", "6", "7", "8"]
var tagID  = a[0].inTagId
var b = Object.keys(a)
var lastInteger = b[(b.length-1)]

Answer 2

var test =  [{"dtCreatedOn": "2021-06-01T03:26:44.910Z", "flgIsActive": true, "inTagId": 1, "stTags": "Emotion"},"4","5","6"]    
var tags = [];
test.map(function(ele) {
if(typeof ele === 'object')
{
tags.push(ele.inTagId);
}
else
{
tags.push(ele)
}
});
tags.join(',')