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Custom errors, extending Error #199

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merged 6 commits into from
Mar 2, 2022
Merged

Custom errors, extending Error #199

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mahdiHash Feb 14, 2022
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10 changes: 5 additions & 5 deletions 1-js/10-error-handling/2-custom-errors/1-format-error/task.md
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Original file line number Diff line number Diff line change
Expand Up @@ -2,13 +2,13 @@ importance: 5

---

# Inherit from SyntaxError
# ارث‌بری از SyntaxError

Create a class `FormatError` that inherits from the built-in `SyntaxError` class.
یک کلاس `FormatError` بسازید که از کلاس درون‌ساخت `SyntaxError` ارث‌بری می‌کند.

It should support `message`, `name` and `stack` properties.
این کلاس باید از ویژگی‌های `message`، `name` و `stack` پشتیبانی کند.

Usage example:
مثالی از کاربرد:

```js
let err = new FormatError("formatting error");
Expand All @@ -18,5 +18,5 @@ alert( err.name ); // FormatError
alert( err.stack ); // stack

alert( err instanceof FormatError ); // true
alert( err instanceof SyntaxError ); // true (because inherits from SyntaxError)
alert( err instanceof SyntaxError ); // true (ارث‌بری می‌کند SyntaxError چون از)
```
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