Vuejs Computed properties – vue watch computed property Examples

Vuejs Computed properties – vue watch computed property Examples

In this post we will show you vue watch computed property Examples , hear for computed properties in v-repeatwith example.Download and demo we will give you demo,Source Code and example for implement.
Computed Properties
– Basic Example
– Computed Property vs. $watch
– Computed Setter
Vuejs Computed properties – vue watch computed property Examples

Requirements

What You Should Already Know
Before you study Vuejs,
need to HTML,
CSS,
JavaScript,
Vuejs Funda..
Browsers opetions

Introduction to Computed Properties in Vuejs Example

Include Libs

Pakainfo.com’ Vuejs tutorial contains lots of Vuejs examples!

vue.js libs

vue computed HTML

Markup File – HTML

<div id="vue-instance">
   result: {{ mypropdbl }}
</div>

vuex computed properties

Script File – javascript

Computed properties are by simple getter-only, but we could also provide a function setter when you need it

var vm = new Vue({
  el: '#vue-instance',
  data: {
    x: 1
  },
  computed: {
    mypropdbl: function() {
      return this.x * 2;
    }
  }
});

Example

vue.js – Computed properties in VueJs

Include Libs

vuejs.js

Pass arguments to computed properties – HTML

Markup File – HTML

<div id="liveapp">
  <div>
    
    <span>Marks for {{ subject.title }}: {{ subject.marks }}</span>
  </div>

  <span>Total marks are: {{ totalpayment }}</span>
  
  <hr>
   
  <button>set</button><br>
  <span>{{ fullwebsite }}</span><br>
  <span>first name: {{ clientname }}</span><br>
  <span>last name: {{ postname }}</span>
</div>

Pass arguments to computed properties Scripts

Script File – javascript

var liveapp = new Vue({
  el: '#liveapp',
  data() {
    return {
      mytempdir: '',
      clientname: '',
      postname: '',
      results: [
        {
          name: 'laravel',
          marks: 70
        },
        {
          name: 'Vuejs',
          marks: 80
        },
        {
          name: 'English',
          marks: 90
        }
      ]
    }
  },
  computed: {
    totalpayment: function () {
    	let total = 0;
      for (let i = 0; i < this.results.length; i++){
      	total += parseInt(this.results[i].marks);
      }
      return total;
    },
    fullwebsite: {
      get: function() {
        return this.clientname + ' ' + this.postname;
      },
      set: function(value) {
        let names = value.split(' ');
        this.clientname = names[0];
        this.postname = names[names.length - 1];
      }
		}
  },
  methods: {
  	setName: function() {
    	this.fullwebsite = this.mytempdir;
    }
  }
})

Templates are simple meant to describe the MVC structure of your view sideComputed Property vs. $watch.

Example