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<html> <head> <script src="https://cdn.jsdelivr.net/npm/vue/dist/vue.js"></script> </head> <body> <h3>Vue js sum of all elements/number to given array </h3> <div id="app"> <p>Array: {{ myArray }}</p> <p>Sum: {{ sumArray(myArray) }}</p> </div> <script type="module"> const app = new Vue({ el: "#app", data() { return { myArray: [11, 22, 13, 44, 15], } }, methods: { sumArray(arr) { return arr.reduce((total, num) => total + num, 0); } } }); </script> </body> </html>