[Vuejs]-How can I update autocomplete/autofill when submitting form using custom javascript function?

try putting this in your form

autocomplete="on"

https://www.w3schools.com/tags/att_input_autocomplete.asp

You need to specify type of the input field type="email"

Note: The autocomplete attribute works with the following types: text, search, url, tel, email, password, datepickers, range, and color.