数组相关运用

//数组一后面添加数组二

const typesAdd = [{"id": 0,"type": "请选择"}]
const typesAdd2 = [{"id": 1,"type": "中国"}]
const typesList = typesAdd.concat(typesAdd2);

//获取数组下标

const checkContent2 = [{"id": 0,"type": "请选择"},{"id": 1,"type": "中国"}]
const valuesNum = []
for (let i = 0; i < checkContent2.length; i++) {
	valuesNum.push(i)
}

//数组添加定义ids

const valuesList = []
valuesNum.forEach(function (item) {
	valuesList.push({
	  ids: item
	})
});

//两个数组合并

const newsItems = checkContent2.map((item, index) => {
	return { ...item, ...valuesList[index] };
});