up

1-js/08-error-handling/2-custom-errors/1-format-error/task.md

@@ -0,0 +1,18 @@
+importance: 5
+
+---
+
+# Inherit from SyntaxError
+
+Create an error `FormatError` that inherits from `SyntaxError`.
+
+Usage example:
+```js
+let err = new FormatError("formatting error");
+
+alert( err.message ); // formatting error
+alert( err.name ); // FormatError
+alert( err.stack ); // stack
+
+alert( err instanceof SyntaxError ); // true
+```