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

1 vote243 views1 answer
Track window resize in vue
Javascript Vue
11 votes228 views2 answers
Go to next route vuejs
Javascript Vue
3 votes178 views2 answers
Vue event
Javascript Vue
0 vote254 views1 answer
Vue js destroyed
Javascript Vue
0 vote235 views2 answers
Flask vue.js not working
Javascript Vue
0 vote247 views1 answer
Jsmodule not installed vuejs webstorm
Javascript Vue
0 vote226 views1 answer
Chunks bug vue js
Javascript Vue
0 vote243 views1 answer
Get base url vuejs
Javascript Vue
1 vote248 views1 answer
Nativescript vue back button handler
Javascript Vue
0 vote235 views1 answer
App.js:38650 [Vue warn]: Failed to mount component: template or render function not defined
Javascript Vue