1传递下标获取item的值

//dataset自定属性,传递下标获取值
<view class="item" data-id="{{index}}" bind:tap="handlePlay"></view>
Page({
    data:{
        musics:[]
    },
    ....
    handlePlay(event){
        var {index} = event.currentTarget.dataset;
        var item = this.data.musics[index];
        var {id,name,musicUrl} = item;
        console.log(item)
    }
})