数组结构转为对象?-灵析社区
三千米的偷感let arr = [{num:'2', text: 'aaa', quantity: 1}, {num: '1', text: 'bbb', quantity: 2}, {num: '2', text: 'ccc', quantity: 1}, {num: '2', text: 'ddd', quantity: 1}, {num: '1', text: 'eee', quantity: 1}] 转为 let obj = { 1:[{answer:'bbb',quantity:2},{answer:'eee',quantity:1}], 2:[{answer:'aaa',quantity:1},{answer:'ccc',quantity:1},{answer:'ddd',quantity:1}] } 用num作为key
横刀立马007let arr = [
{ num: '2', text: 'aaa', quantity: 1 },
{ num: '1', text: 'bbb', quantity: 2 },
{ num: '2', text: 'ccc', quantity: 1 },
{ num: '2', text: 'ddd', quantity: 1 },
{ num: '1', text: 'eee', quantity: 1 }
];
let obj = {};
// 遍历数组并将条目按照num属性值分组
arr.forEach(item => {
const num = item.num;
const answer = item.text;
const quantity = item.quantity;
if (!obj[num]) {
obj[num] = [];
}
obj[num].push({ answer, quantity });
});
// 输出结果
console.log(obj);
"image.png" (https://wmprod.oss-cn-shanghai.aliyuncs.com/images/20241224/9b03c291620c9537cbfe76e737a7904a.png)