I can not understand why this line of code is used in vue.js?

Question

JavaScript

I am analyzing form validation in view, and in the example ( https://codepen.io/cfjedimaster/pen/vWqNXZ) I don’t understand the logic of what is happening. Namely line 11 this.errors = []; .We declared an array in the data, why can't we just refer to it and immediately push this.errors.push into it . Why re-advertise? Thanks in advance...

Answer 1

It's not an announcement, it's a reset.
So that it was initially 0, then it will be filled if errors appear, i.e. so that previous errors do not display