let list = [
{ id: '1', name: '甲', title: '甲说的话' },
{ id: '1', name: '乙', title: '霜晨月' },
{ id: '1', name: '丙', title: '西风烈' },
{ id: '2', name: '秦王', title: '诸侯尽西来' },
{ id: '3', name: '陈独秀', title: '马蹄声碎' },
{ id: '4', name: '小红', title: '6' },
{ id: '4', name: '小蓝', title: '雄关漫道真如铁' },
{ id: '2', name: '政', title: '八面玲珑' },
{ id: '5', name: '李世民', title: '登山麾武节，背水纵神兵' },
]
let newlist = []//创建一个空数组
//将原数组进行循环
list.forEach(item => {
//通过findeindex查找是否有满足条件的下标
let index = newlist.findIndex(n => n.id == item.id)
// 如果没有就push进去
if (index == -1) {
newlist.push(item)
} else {
//有的话进行拼接
newlist[index].name = newlist[index].name + ',' + item.name
newlist[index].title = newlist[index].title + ',' + item.title
}
})
console.log(newlist);
let list = [
{ id: '1', name: '甲', title: '甲说的话' },
{ id: '1', name: '乙', title: '霜晨月' },
{ id: '1', name: '丙', title: '西风烈' },
{ id: '2', name: '秦王', title: '诸侯尽西来' },
{ id: '3', name: '陈独秀', title: '马蹄声碎' },
{ id: '4', name: '小红', title: '6' },
{ id: '4', name: '小蓝', title: '雄关漫道真如铁' },
{ id: '2', name: '政', title: '八面玲珑' },
{ id: '5', name: '李世民', title: '登山麾武节，背水纵神兵' },
]
let newlist = []
list.forEach(item => {
let index = newlist.findIndex(n => n.id == item.id)
if (index == -1) {
newlist.push(item)
} else {
newlist[index].name = newlist[index].name + ',' + item.name
newlist[index].title = newlist[index].title + ',' + item.title
}
})
console.log(newlist);
