Add Digits Together on Button Click in JavaScript

We are required to write a JavaScript program that provides users an input to fill in a number.

And upon filling when the user clicks the button, we should display the sum of all the digits of the number.

Example

The code for this will be −

JavaScript Code −

function myFunc() {
   var num = document.getElementById('digits').value;
   var tot = 0;
   num.split('').forEach( function (x) {
      tot = tot + parseInt(x,10);
   });
document.getElementById('output').innerHTML = tot;
}

HTML Code −

<input id="digits" />
<button onClick="myFunc()">Submit</button>
<div id="output"></div>

Output

And the output will be &miuns;

After clicking “Submit” −