add solution

README.md

@@ -1,5 +1,5 @@
 1. Replace `<your_account>` with your Github username in the link
-    - [DEMO LINK](https://<your_account>.github.io/js_get_data_DOM/)
+    - [DEMO LINK](https://Yevhen-Srdk.github.io/js_get_data_DOM/)
 2. Follow [this instructions](https://mate-academy.github.io/layout_task-guideline/)
     - There are no tests for this task so use `npm run lint` command instead of `npm test`
 

src/scripts/main.js

@@ -1,3 +1,24 @@
 'use strict';
 
-// write your code here
+const population = document.querySelectorAll('.population');
+let totalPopulationCount = 0;
+let isNumberCount = 0;
+
+for (const item of population) {
+  const valueNormalization = item.textContent.replace(/[\u00A0,\s]/g, '');
+  const value = Number(valueNormalization);
+
+  if (Number.isFinite(value)) {
+    totalPopulationCount += value;
+    isNumberCount++;
+  }
+}
+
+const averagePopulationResult =
+  isNumberCount > 0 ? Math.round(totalPopulationCount / isNumberCount) : 0;
+
+const totalPopulation = document.querySelector('.total-population');
+const averagePopulation = document.querySelector('.average-population');
+
+totalPopulation.textContent = totalPopulationCount.toLocaleString('en-US');
+averagePopulation.textContent = averagePopulationResult.toLocaleString('en-US');