this.$delete delete this.$set

var a=[1,2,3,4]var b=[1,2,3,4]delete a[1]console.log(a)//134length4 (变为undefined)this.$delete(b,1)console.log(b)//134length3(完成删除)let obj={a:1,b:2}this.set去改变数组对象，vue能响应变化this.set去改...

小墨宝

2682人浏览 · 2020-03-09 10:12:34

小墨宝 · 2020-03-09 10:12:34 发布

var a=[1,2,3,4]
var b=[1,2,3,4]
delete a[1]
console.log(a) //134 length4 (变为undefined)
this.$delete(b,1)
console.log(b) //134 length3 (完成删除)
let obj={a:1,b:2}

this. $s e t 去改变数组对象， v u e 能响应变化 t h i s .$ set(a,1,0)
this.$set(obj,a,0)