JS根据时间内容分组代码

let newArr = [];

res.data.data.forEach((address, i) => {

let index = -1;

let newDates = Date.parse(new Date(address.created_at).toLocaleDateString());

console.log(newDates);

let alreadyExists = newArr.some((newAddress, j) => {

if (newDates === newAddress.created_at) {

index = j;

return true;

}

});

if (!alreadyExists) {

newArr.push({

created_at: newDates,

id:address.id,

location: [address.title]

});

} else {

newArr[index].location.push(address.title);

}

});

newArr.map((item,index)=>{

let date = new Date(item.created_at).toLocaleString();

let newDate = date.substring(0,10);

item.created_at = newDate;

});

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