What could be the reason behind the absence of the definition for "console" in an inline function responsible for handling an event from a component?

Question

What could be the reason behind the absence of the definition for "console" in an inline function responsible for handling an event from a component?

A component called my-component was created by me, which sends the message my-message using this.$emit('my-message').

To respond to this message, I attempted to utilize

<my-component @my-message="()=>console.log('hello')" />

Upon checking the console, I encountered a warning (followed by an error)

The property or method "console" is not defined on the instance but referenced during render

Having repeated this mistake several times before, my guess is that the issue stems from using fat arrows in context (this versus that = this previously) but at this point, I am confused.

console can be accessed as Window.console, yet utilizing the full form of Window yields the same error.

javascript vue.js console.log arrow-functions

Answer 1

Answer №1

It won't be effective in Vue.

Suggest using a method name instead

<template>
  <button @click="log('test')">
    test
  </button>
</template>

<script>
import { defineComponent } from "vue";
export default defineComponent({
  methods: {
    log(value) {
      console.log(value)
    }
  }
});
</script>

Answer 2

It won't be effective in Vue.

Suggest using a method name instead

<template>
  <button @click="log('test')">
    test
  </button>
</template>

<script>
import { defineComponent } from "vue";
export default defineComponent({
  methods: {
    log(value) {
      console.log(value)
    }
  }
});
</script>

Answer 3

Answer №2

Instead, consider moving the global objects to a computed property:

computed: {
  console: () => console,
  window: () => window,
}

For more information, refer to this helpful answer from @tao

OR

You have the option to define them as global **properties**.

Take a look at this solution provided by @wenfang-du:

Answer 4

Instead, consider moving the global objects to a computed property:

computed: {
  console: () => console,
  window: () => window,
}

For more information, refer to this helpful answer from @tao

OR

You have the option to define them as global **properties**.

Take a look at this solution provided by @wenfang-du:

What could be the reason behind the absence of the definition for "console" in an inline function responsible for handling an event from a component?

Answer №1

Answer №2

OR

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