let A = [
{province: '广东省', city: '深圳市'},
{province: '湖南省', city: '长沙市'},
{province: '浙江省', city: '宁波市'},
{province: '广东省', city: '广州市'},
{province: '广东省', city: '佛山市'},
{province: '湖南省', city: '湘潭市'},
{province: '湖南省', city: '株洲市'},
{province: '广东省', city: '东莞市'}
]
需要得到,麻烦各位大佬帮看看,谢谢了
let B = [
{
province: '广东省',
childList: [
{province: '广东省', city: '深圳市'},
{province: '广东省', city: '广州市'},
{province: '广东省', city: '佛山市'},
{province: '广东省', city: '东莞市'}
]
},
{
province: '湖南省',
childList: [
{province: '湖南省', city: '长沙市'},
{province: '湖南省', city: '湘潭市'},
{province: '湖南省', city: '株洲市'}
]
},
{
province: '浙江省',
childList: [
{province: '浙江省', city: '宁波市'}
]
},
]
forEach
更简单直接 :