codesandbox / codesandbox/codesandbox-client

Showing errors in console for no reason in vue router project

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#2,095 21 comments 4 reactions 0 assignees View on GitHub

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Dominant language
JavaScript
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Description

🐛 bug report

Error: Property or method "children" is not defined on the instance but referenced during render. Make sure that this property is reactive, either in the data option, or for class-based components, by initializing the property.

Description of the problem

I just tried to add a button and tried to console log 'this' or 'this.something' and got into these errors.
I dont see anything wrong with code tho.

How has this issue affected you? What are you trying to accomplish?

Link to sandbox: link (optional)

https://codesandbox.io/s/vue-routing-example-bx3mg

Your Environment
Software Name/Version
Сodesandbox
Browser All
Operating System All

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by reproducing the console error in the linked CodeSandbox vue-routing-example-bx3mg, focusing on the added button and logging of this or this.something. Compare the rendered component behavior with the reported “children” warning; done means the unnecessary console errors are no longer produced in the stated environment.

Written by the indexing model from the issue text.

Assessment

Tech stack
javascript
Domain
frontend, web-dev
Issue type
Bug
Difficulty
3/5
Estimated time
1-2 days
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
25/100

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