Blog

Mert Özen's blog posts on software development, backend, frontend, and DevOps.

Series

.NET Core Web API 36 Angular 31 JavaScript Basics 19 JavaScript Intermediate 18 JavaScript Advanced 16 TypeScript Basics 14 TypeScript Intermediate 14 TypeScript Advanced 12

2 posts found #dogrulama

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Frontend PART 16

JavaScript Forms: Reading Values, Handling Submit and Simple Validation

We read form values with value, checked and selectedIndex, catch the submit event, write checks for empty fields, email and length, show errors on the page and get to know HTML's built-in validation.

3 Nov 2026 9 min 4

Frontend PART 19

JavaScript RegEx Basics: Searching and Validating Text with Regular Expressions

We use test, match, matchAll and replace with regular expressions, learn character classes, quantifiers, groups and the g, i and m flags, write email, phone and postal code checks and meet RegExp.escape.

3 Nov 2026 9 min 5