console.error() Error output
Last updated: 2026-09-09
console.error() Error output
console.error outputs an error message (red) to the console.
| Category | Browser (BOM) |
|---|---|
| ES version | DOM |
📝 Syntax
console.error(message);⚙️ Parameters
| messageN | Error message(s). |
|---|
Returns：undefined.
Mutates the original：No (returns a new value)
▶ Example
Edit the code, press Run, and see the result in the output panel:
Output：
Failed: ...💡 Tip Use error for errors (red) and warn for warnings (yellow).
🌐 Browser support
| Browser |  Chrome |
 Edge |
 Firefox |
 Safari |
 Opera |
|---|---|---|---|---|---|
| console.error() | ✓ v1 | ✓ v12 | ✓ v1 | ✓ v1 | ✓ v1 |
| Supported by all modern browsers | |||||
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❓ FAQ
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