Vue 3 computed

Vue 3 composition api watch

// directly watching a ref

const selected = ref(props.selected)

watch(selected, (selection, prevSelection) => { 
   /* ... */ 
})

Source: stackoverflow.com

Vue computed

var vm = new Vue({
  el: '#example',
  data: {
    message: 'Hello'
  },
  computed: {
    // a computed getter
    reversedMessage: function () {
      // `this` points to the vm instance
      return this.message.split('').reverse().join('')
    }
  }
})

Vue 3 computed

const count = ref(1)
const plusOne = computed(() => count.value + 1)

console.log(plusOne.value) // 2

plusOne.value++ // error
1

Source: v3.vuejs.org

Similar codes

0 vote305 views1 answer
Vue js qr code scanner
Javascript Vue
0 vote284 views1 answer
Find element by object field vuejs
Javascript Vue
0 vote268 views1 answer
Data table is not a function in vue
Javascript Vue
0 vote304 views1 answer
Jsmodule not installed vuejs webstorm
Javascript Vue
0 vote244 views1 answer
Dateformat filter vue
Javascript Vue
0 vote280 views1 answer
Vue router "savedposition" with ajax call
Javascript Vue
1 vote315 views2 answers
Target data option select vue js
Javascript Vue
0 vote284 views1 answer
Chunks bug vue js
Javascript Vue
1 vote297 views1 answer
Fetch composition API in Vue3
Javascript Vue
0 vote317 views1 answer
Await vuex dispatch true
Javascript Vue