Test, debug, and fix JavaScript errors with our comprehensive tool. Get detailed analysis, suggestions, and performance metrics for your code.
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JavaScript Code Editor
// Enter your JavaScript code here
function calculateTotal(price, quantity) {
return price * quantity;
}
// Example function with potential error
function displayTotal() {
let total = calculateTotal(25, 4);
console.log("Total: " + total);
document.getElementById("result").innerHTML = total;
}
// Call the function
displayTotal();
Error Analysis
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Errors
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Warnings
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Suggestions
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Code Quality
InfoLine 1, Column 1
No errors detected. Write or paste your JavaScript code to begin analysis.
The code editor is ready to analyze your JavaScript code for errors, warnings, and suggestions.
Real-time Analysis
Get instant feedback on your JavaScript code with our real-time error detection system.
Smart Suggestions
Receive intelligent suggestions to fix errors and improve your code quality.
Performance Metrics
Measure your code's performance with detailed metrics and optimization tips.
Frequently Asked Questions
What types of JavaScript errors can this tool detect?
Our tool can detect a wide range of JavaScript errors including syntax errors, reference errors, type errors, runtime errors, and common logical mistakes. It also identifies potential issues with browser compatibility, performance anti-patterns, and security vulnerabilities.
How does this tool help improve code quality?
The tool provides detailed error analysis, suggests best practices, identifies performance bottlenecks, and offers recommendations based on industry standards. It helps you write cleaner, more efficient, and maintainable JavaScript code.
Can I use this tool for frameworks like React or Vue?
Yes, the tool supports JavaScript frameworks including React, Vue, Angular, and others. You can select the appropriate code type in the settings to get framework-specific analysis and suggestions.
Is my code secure when using this tool?
Absolutely. All code analysis happens locally in your browser, and we don't send your code to any external servers. Your code remains completely private and secure.
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