How to send variable from parent to child component when I use "click" at vue.js?

computed: {
    optionsData () {
        groupTemplate: (item, element, data) => {
          if (!item) return
          var container = document.createElement('div')
          if (item.isDisable !== true) container.setAttribute('class', 'enable')
          var i = document.createElement('i')
          // click
          i.addEventListener('click', () => {
            // itemのidを取得してSuspendedMemoに渡す
            var itemId = item.id
            const url = `/shop/${this.selectedShopId}/room/${itemId}/suspend_memo`
            console.log('Timeline of URL’, url)
            this.data = item.suspendedReserveMemo
            this.openMemo()
          })
          i.setAttribute('class', 'v-icon notranslate mr-2 mdi mdi-close-circle theme--light pink--text')
          container.appendChild(i)
          var span = document.createElement('span')
          span.innerHTML = item.content
          container.appendChild(span)
          return container
        }
      }
      return _.merge({}, base, this.options)
    }
  },

How to send variable from Parent to Child component when I use "click" at Vue.js?