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

2 votes289 views1 answer
Vue router 404 page
Javascript Vue
10 votes341 views2 answers
Vuejs does props factory function have access to vue instance
Javascript Vue
0 vote282 views1 answer
Vuetify use selected value
Javascript Vue
0 vote283 views1 answer
Add rows to the table dynamically with the use of vue.js
Javascript Vue
16 votes412 views4 answers
Vue js default prop
Javascript Vue
0 vote273 views1 answer
Vue router "savedposition" with ajax call
Javascript Vue
0 vote302 views1 answer
How to securely post form data to api vuejs
Javascript Vue
0 vote459 views1 answer
Vue htmlWebpackPlugin.options.title
Javascript Vue
0 vote286 views1 answer
Webpack ReferenceError: process is not defined #871 electron vue
Javascript Vue
0 vote301 views1 answer
Vue js qr code scanner
Javascript Vue