[Vuejs]-How to make function and loop in VUE correctly?

Some hints on how to use the variables in vue:

  data() return {
    pv: {
      p: '',
      pd: '', 
      d: '',
      u: '',
      w: '',
   },
  },
  methods: {
    calc1() {  // no function keyword required
      let pv = this.pv;  // shorthand
      pv.d = pv.p - pv.d; 
      pv.w =  pv.pd - pv.u;
    },
    calc2() {
      let pv = this.pv;
      if(pv.w < 1000){
        pv.w = 1000 - pv.u;
      } else {
        pv.w = pv.w - pv.u;
      }
    },
    calc3() {
      let pv = this.pv;
      for(let i=0; i<10; i++){
        pv.w += pv.u*i;
      }
    }