#Error and Warning Lines

Error and warning lines is a way show the line that you want to highlight as error or warning.

#Code Example

Show error and warning lines using the // [!code error] and // [!code warning] identifier.

```bash showLineNumbers
console.log("Normal")
console.error("Error") //[!code error]
console.warning("Warning") //[!code warning]
```

It will show like this

console.log("Normal")
console.error("Error") 
console.warning("Warning")