getRepeatId (arr, id) {
var index = arr.findIndex(item => item.id=== id)
return index // -1 说明arr中不存在id为传入id的对象
}
const arr = [{id: 1},{id: 2},{id: 3},{id: 4},{id: 5}]
this.getRepeatId(arr, 1)
this.getRepeatId(arr, 6)
getRepeatId (arr, id) {
var index = arr.findIndex(item => item.id=== id)
return index // -1 说明arr中不存在id为传入id的对象
}
const arr = [{id: 1},{id: 2},{id: 3},{id: 4},{id: 5}]
this.getRepeatId(arr, 1)
this.getRepeatId(arr, 6)
本文标题：判断数组中是否包含某个id的对象
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