How to solve Error in mounted hook: ‘X’ is not defined error in Vue?

The “Error in mounted hook: ‘X’ is not defined” error in Vue occurs when you try to access a variable or property that hasn’t been defined in your component. This can happen if you misspell the name of a variable, forget to define it, or try to access it before it has been initialized. Here are some steps to help you solve this error:

Check the spelling of the variable: Double-check the spelling of the variable name to make sure that it matches the name you used when defining it.

Check the scope of the variable: Make sure that the variable is defined in the correct scope. If it’s defined in a method or computed property, you won’t be able to access it from the mounted hook.

Check the timing of the variable initialization: If you’re trying to access a variable that hasn’t been initialized yet, you’ll get this error. Make sure that you’re initializing the variable before trying to access it.

Check the template: If you’re trying to access a property from the template, make sure that it has been defined in the data object or computed properties.

Check the order of component lifecycle hooks: If you’re trying to access a property that is initialized in a later lifecycle hook, make sure that you’re accessing it in the appropriate hook.

By following these steps, you should be able to fix the “Error in mounted hook: ‘X’ is not defined” error in Vue and ensure that your component is functioning properly.

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