Coding⏱️ 2 min read📅 2026-05-31
How to Fix: Angular4 Exception: Can't bind to 'ngClass' since it isn't a known property of 'input'
Angular4 exception when using ngClass directive on input element
Quick Answer: Use the 'ngStyle' directive instead of 'ngClass' for dynamic styles, or add the 'ngClass' directive to a parent element that supports it.
📋 Table of Contents
To fix the issue of 'Can't bind to 'ngClass' since it isn't a known property of 'input'
💡 Why You Are Getting This Error
- [Cause]
🛠️ Step-by-Step Verified Fixes
Method 1: Add Directive to Component
- Step 1: Import the NgClass directive in your component and add it to your form element.
Method 2: Use ngIf
- Step 1: Add an ngIf directive to your form element and use the boolean expression to conditionally add or remove the classes.
✨ Wrapping Up
[Wrap-up]
❓ Frequently Asked Questions
Step 1: Import the NgClass directive in your component and add it to your form element.
Step 1: Add an ngIf directive to your form element and use the boolean expression to conditionally add or remove the classes.
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