JSFiddle - React, Tailwind, and code Playground

by Michal L

HTML

<p id="one">
  html start
</p>

JavaScript

var paragraph = document.getElementById("one");
paragraph.insertAdjacentHTML('beforeend', '<p>script start</p>');

var n = prompt("enter a number");
var sum = 0;
var divider = 7;
var i = divider;

function licz(n) {
	if (n < divider){
  	return 0;
  }
  else {
		for (i; i <= n; i++) {
    	if (i % divider == 0) {
      	sum += i;
      }
    }
    
  }
  return sum;
}
paragraph.insertAdjacentHTML('beforeend', "your number: " + n + "<br>");

paragraph.insertAdjacentHTML('beforeend', "result: " + licz(n));