In Vuejs I have to delete a section when I click on "X" but there is some error

Question

Output image of error on console

This is the code picture showing the error

Answer 1

There is neither a property named tab nor a property named Index in your code Define the data section and add these properties

data() {
 return {
  tab: null,
  Index: null
 }
}

Also, I don't see any use of these variables other than console.log. So if this were true, there would be no need to define the data() part. You can directly emit parameters like

methods: {
  removeSection(idx) {
   this.$emit('remove', idx);
  }
}