Quick Answer

Diagnose and fix unexpected token syntax errors.

Understanding the Issue

This syntax error occurs when JavaScript encounters a character it didn't expect at that position. Common causes include missing brackets, incorrect operator usage, or invalid characters.

The Problem

This code demonstrates the issue:

Javascript Error 
const x = 5;
if (x => 10) { // Wrong comparison operator
    console.log('Large');
}

const obj = { x: 1, y: 2 // Missing closing brace

The Solution

Here's the corrected code:

Javascript Fixed 
// Corrected comparison
if (x >= 10) {
    console.log('Large');
}

// Complete object
const obj = { x: 1, y: 2 };

// Common fixes:
// - Balance all brackets and quotes
// - Verify operator usage
// - Check for reserved keywords

Key Takeaways

Carefully check syntax and use linters to catch these errors early.