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[Javascript] How to sum of all its digits for a number



Given a number x, find sum of digits in that number.
Examples:


1. Input n = 8
Output – Sum of digits in number is 8


2. Input n = 1234
Output – Sum of digits in number is 10


3. Input n = – 8
Output – Sum of digits in number is -8


4. Input n = -1234
Output – Sum of digits in number is 8


Step 1: we have to create a demo.html



Step 2: we write the function in javascript to sum of all digits in a number. With 2 ways to declare the function.


The first one: using var num = parseInt(document.getElementById(“demo”).value); when everything is done, we got the sum. We will use document.getElementById(“result”).innerHTML = sum to show on web browser.


The second one: using var textType = Node.textContent ? ‘textContent’ : ‘innerText’; Is is the textContent or innerText? You also do something like the first one, but when you get the value for <p> tag. Just using like this result1[textType] = sum;


Let’s do it now







[Javascript] How to sum of all its digits for a number


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