1. let list = [
    2.     {
    3.         customUrl: "www.aa.com",
    4.         showFlag: null,
    5.         showOrder: 0,
    6.         title: "电脑维修1",
    7.         titleTag: "热门1"
    8.     },
    9.     {
    10.         customUrl: "www.bb.com",
    11.         showFlag: null,
    12.         showOrder: 0,
    13.         title: "电脑维修2",
    14.         titleTag: "热门1"
    15.     },
    16.     {
    17.         customUrl: "www.cc.com",
    18.         showFlag: null,
    19.         showOrder: 0,
    20.         title: "电脑自购1",
    21.         titleTag: "其他"
    22.     },
    23.     {
    24.         customUrl: "www.dd.com",
    25.         showFlag: null,
    26.         showOrder: 0,
    27.         title: "电脑自购2",
    28.         titleTag: "其他"
    29.     }
    30. ]
    31. const m = new Map();
    32. list.map(item => {
    33.     m.set(item.titleTag, [...(m.get(item.titleTag) || ''), item.customUrl])
    34. })
    35. const newList = Object.fromEntries(m.entries())
    36. console.log("根据titleTag值筛选出字段curstomUrl值：", newList)
    37. // 进行遍历
    38. for (let key in newList) {
    39.     if (key === Object.keys(newList)[0]) {
    40.         console.log("拿到热门的内容包含的值：", newList[key])
    41.         const obj = newList[key]
    42.         let newObj = Object.keys(obj).map(e => {
    43.             return {
    44.                 title: obj[e]
    45.             }
    46.         })
    47.         console.log('重新组合后的值', newObj)
    48.     } else {
    49.         console.log("其他的内容的值：", newList[key])
    50.     }
    51. }