get 也能进行传参计算 跟 vue computed

class 里面的get方法

class Computed {
  n = 4
  get Num () {
    return (m: number) => {
      return this.n * m
    }
  }
}

const a = new Computed()
const b = a.Num(3) // 12

Vue

// html
<div>{{ total(3) }} </div>

// js
computed: {
    total() {
      return function(n) {
          return n * this.num
         }
    },
  }