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<html> <head> <script src="https://cdn.jsdelivr.net/npm/vue/dist/vue.js"></script> </head> <body> <h3>Vue Js Count Property/Keys of Object </h3> <div id="app"> <p>Number of keys/Propety in myObject: {{ numKeys }}</p> </div> <script type="module"> const app = new Vue({ el: "#app", data() { return { myObject: { name: 'Andrew', age: 31, role: 'developer' } } }, computed: { numKeys() { return Object.keys(this.myObject).length; } } }); </script> </body> </html>