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23 lines
732 B
Markdown
23 lines
732 B
Markdown
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---
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id: intentionally-fail-js-query
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title: Intentionally fail a RunJS query
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---
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In this how-to guide, we will create a RunJS query that will throw an error.
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- Create a RunJS query and paste the code below. We will use the constructor `ReferenceError` since it is used to create a range error instance.
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```js
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throw new ReferenceError('This is a reference error.');
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```
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- Now, add a event handler to show an alert when the query fails. **Save** the query and **Run** it.
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<div style={{textAlign: 'center'}}>
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<img className="screenshot-full" src="/img/how-to/failjs/failjs.gif" alt="Intentionally fail a RunJS query" />
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</div>
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:::info
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Most common use-case for intentionally failing a query is **debugging**.
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:::
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