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* whtie label revamp * minor changes * updated beta info in copilot docs * renamed gds to ds in overview doc of v2.15 onwards * updated multienv: renamed gds to ds, updated screenshot * updated multienv: app state description * updated superadmin wrt new licensing updates * licensing update: free trial * updates in licensing * changes after review * [docs]updated restapi with bearer auth * Update kubernetes-aks.md * Update openshift.md * Update ecs.md * Update ecs.md * Update kubernetes-gke.md * Update kubernetes.md * Update docker.md * Update docker.md * Update ecs.md * Update google-cloud-run.md * Update kubernetes-aks.md * Update kubernetes-gke.md * Update kubernetes.md * Update openshift.md * Update kubernetes-gke.md * Update kubernetes-aks.md * fixed ecs, removed heroku from 2.15 onwards * updated digitalocean doc * licensing doc changes and location * Update digitalocean.md * Update digitalocean.md * added v2.18.0 --------- Co-authored-by: Adish M <44204658+adishM98@users.noreply.github.com>
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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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::: |