// 均价    checkKeydown(value, e){      this.registerForm.averagePrice = this.changeNumber2(value)    },    // 预算    changsoldBudget(value) {      this.registerForm.buildingBudget = this.changeNumber2(value)    },    // 保留正整数    changeNumber(value) {      value = value.replace('.','');      value = value.replace(/[^\.\d]/g,'');      return value    },    // 保留2位小数    changeNumber2(value) {      if (!value) {        value = ''      }      value = parseFloat(value).toFixed(2)      value=value.replace(/[^\.\d]/g,'')        return value    },