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0 votes
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in Technique[技术] by (71.8m points)

key()和push()不能连用吗?

                this.Num.forEach(item=>{
                    if (this.Group.length>0) {
                       this.Group.find(key=>key.id===item.id? '':item)
                        this.Group.push(item)
                    }else {
                        this.Group.push(item)
                    }

                })

Num要遍历,然后匹配Group中找到不一样的key,在push到group里形成一个新数组。


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0 votes
by (71.8m points)

搞那么复杂干嘛,换成这样写不好吗

this.Num.forEach(item=>{
    if (!this.Group.some(key => key.id === item.id)) {
        this.Group.push(item)
    }
})

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