Arrays Typescript数组-拼接&；插入

我这里有3个通道阵列

currentPickSelection: Array<channel>;
draggedChannel: channel;
droppedChannel: channel;

这是我声明通道模型的方式：

export class CompChannel {
    constructor(public compChannelCbsCode: string, 
        public compChannelName: string, 
        public compChannelLogo: string) {}
}

export class channel {
    public pickCode: string;
    public cbsCode: string;
    public channel: string;
    public logo: string;
    public compChannel: CompChannel[];

    constructor(pickCode: string, cbsCode: string, channel: string,
        logo: string, compChannel: CompChannel[]) {
        this.pickCode = pickCode;
        this.cbsCode = cbsCode;
        this.channel = channel;
        this.logo = logo;
        this.compChannel = compChannel;
    }
}

---

请告诉我出了什么问题

droppedChannel对象和在

currentPickSelection

中找到的项目可能不完全相同

尝试与

findIndex

方法中的唯一值（如

pickCode

或

cbsCode

）进行比较，而不是与整个对象进行比较

let currentPickSelection: any[] = [
 { id: 1, label: 'Test1' },
 { id: 2, label: 'Test2' },
 { id: 3, label: 'Test3' }
];
let draggedChannel: any = { id: 5, label: 'Test5' };
let droppedChannel: any = { id: 3, label: 'Test3' };
let index = currentPickSelection.findIndex(item => {
   return item.id == droppedChannel.id; //use unique value instead of item object
});
if (index > -1) 
 currentPickSelection.splice(index, 1, draggedChannel);

---

您正在将一个通道与一组通道进行比较。给定变量的名称，draggedChannel和droppedChannel应该是一个通道，而不是一个通道数组。draggedChannel和droppedChannel，它们只是单个通道，但currentPickSelection数组是一个通道数组。那你为什么要声明draggedChannel和droppedChannel为数组呢？这是droppedChannel的输出{pickCode:“785”，cbsCode:“喜剧”，Channel:“喜剧网络”，logo:“/assets/Cometic Network.jpg”，compChannel:Array（1）}，这是droppedChannel的输出{pickCode:“800”，cbsCode:“SHCASE”，频道：“Showcase”，徽标：“/assets/Showcase.png”，compChannel:Array（1）}如果声明：

draggedChannel:channel，它是否有效；下降通道：通道，如@JBNizet所建议？
let currentPickSelection: any[] = [
 { id: 1, label: 'Test1' },
 { id: 2, label: 'Test2' },
 { id: 3, label: 'Test3' }
];
let draggedChannel: any = { id: 5, label: 'Test5' };
let droppedChannel: any = { id: 3, label: 'Test3' };
let index = currentPickSelection.findIndex(item => {
   return item.id == droppedChannel.id; //use unique value instead of item object
});
if (index > -1) 
 currentPickSelection.splice(index, 1, draggedChannel);