suppose there is an array like this
[
{eid: 1, name: aa},
{eid: 1, name: bb},
{eid: 2, name: cc},
{eid: 1, name: dd},
{eid: 3, name: ee},
{eid: 1, name: ff},
{eid: 2, name: gg}
]
if I want him to run ngFor
can this array be displayed according to eid classification?
the final result should be shown like this
1 aa
1 bb
1 dd
1 ff
2 cc
2 gg
3 ee
data preprocessing and sorting.
arr.sort((c, n) => c.eid < n.eid ? -1 : c.eid > n.eid ? 1 : 0)ngFor should only be rendered sequentially, and there is no way to change the DOM structure
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