Update index.md (#33630)

guide/english/certifications/javascript-algorithms-and-data-structures/basic-javascript/use-the-parseint-function/index.md

@@ -2,9 +2,16 @@
 title: Use the parseInt Function
 ---
 ## Use the parseInt Function
+The ```parseInt()``` function will take any ```string``` parameter representing a number and return its integer value. 
 
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+## Hint 1 
+```parseInt()``` should be used inside your function and return whatever ```str``` is, assuming that ```str``` is a string representing some number.
 
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+## Solution
+```javascript
+function convertToInteger(str) {
+    return parseInt(str); 
+}
 
-<!-- The article goes here, in GitHub-flavored Markdown. Feel free to add YouTube videos, images, and CodePen/JSBin embeds  -->
+convertToInteger("56");
+```