使用对于多条件判断可以使用includes()

includes() 方法用来判断一个数组是否包含一个指定的值，根据情况，如果包含则返回 true，否则返回false。

比如：

if (list.incidentType === 1 || list.incidentType === 2 || list.incidentType === 3 || list.incidentType === 4 || list.incidentType === 5 || list.incidentType === 6 || list.incidentType === 7 || list.incidentType === 8 || type
      === 17 || list.incidentType === 18 || list.incidentType === 21 || list.incidentType === 23 || list.incidentType === 24 || list.incidentType === 25 || list.incidentType === 26 || list.incidentType === 27 || list.incidentType === 28 || list.incidentType === 29
    ) {
      list.icon = '/assets/glodCenter/icon/jl.png'
    }else if (list.incidentType === 11 || list.incidentType === -1 || list.incidentType === 16 || list.incidentType === 19 || list.incidentType === 20 || list.incidentType === 30
     || list.incidentType === 31
    ) {
      list.icon = '/assets/glodCenter/icon/xh.png'
    }

上面的可以简写成

//奖励相关
    const listArr1 = [1,2,3,4,5,6,7,8,17,18,21,23,24,25,26,27,28,29]
    // 消耗相关
    const listArr2 = [-1,11,16,19,20,30,31]
    // 好友相关
    const listArr3 = [12,13,14,15]
    if (listArr1.includes(list.incidentType)) {
      list.icon = '/assets/glodCenter/icon/jl.png'
    } else if (listArr2.includes(list.incidentType)) {
      list.icon = '/assets/glodCenter/icon/xh.png'
    } else if (listArr3.includes(list.incidentType)) {
      list.icon = '/assets/glodCenter/icon/hy.png'
    }