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Vue.js v-once Directive
  • Last Updated : 14 Jul, 2020

The v-once directive is a Vue.js directive that is used to avoid unwanted re-renders of an element. It treats the element as a static content after rendering it once for the first time. This improves performance as it does not have to be rendered again. First, we will create a div element with the id of choice. The v-once directive is then applied to this element to make it render only once.

Syntax:

v-once

Parameters: This function does not accept any parameter.

Example: This example uses Vue.js to show the working of the data with v-once.




<!DOCTYPE html>
<html>
  
<head>
    <title>
        VueJS v-once Directive
    </title>
  
    <!-- Load Vuejs -->
    <script src=
    </script>
</head>
  
<body>
    <div style="text-align: center;
              width: 600px;">
        <h1 style="color: green;">
            GeeksforGeeks
        </h1>
  
        <b>
            VueJS | v-once directive
        </b>
    </div>
  
    <div id="canvas" style=
        "border: 1px solid #000000;
        width: 600px; height: 200px;">
        <div id="app" style="text-align: center;
                padding-top: 40px;">
            <h1 v-once>{{ data }}</h1>
        </div>
    </div>
    <script>
        var app = new Vue({
            el: '#app',
            data: {
                data: 'GeeksforGeeks'
            }
        })
    </script>
</body>
  
</html>

Output:

full-stack-img




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