微信小程序 怎么动态的赋值呢？

Question

this.setData({
    "bottomTip[this.data.nav.currentIndex].state": 2
})

this.data.nav.currentIndex 是不确定的

有办法这样赋值吗？

Answer 1

this.setData({
    [`bottomTip[${this.data.nav.currentIndex}].state`]: 2
})

Answer 2

var state= "bottomTip["+this.data.nav.currentIndex+"].state";
this.setData({
   [state]: 2
})

Answer 3

你这样的赋值逻辑有点奇怪，应该是这样吧

data: {
   bottomTip:[]
  }

changeData: function(){
    bottomTip[this.data.nav.currentIndex].state = 2
    this.setData({
        bottomTip: bottomTip
    })
}