JavaScript Formatter

What is JavaScript Formatter?

The formatter breaks code at braces and semicolons and indents blocks. It is a lightweight readability aid rather than a full Prettier replacement, so very complex code may need manual touch-ups.

How to use JavaScript Formatter

1. Paste your input into the editor above, or select Sample to load an example.
2. Select Format JavaScript. If the input cannot be processed, a message explains what to fix.
3. Use Copy or Download to take the result with you, and Clear to start again.

Example

Input

function add(a,b){return a+b;}

Output

function add(a,b) {
  return a+b;
}

Practical use cases

• Inspect bundled snippets
• Clean up examples
• Review generated code

Common problems

• Treating formatting as linting
• Running untrusted code
• Expecting style-guide-specific output

Frequently asked questions