JSFiddle - React, Tailwind, and code Playground

HTML

<form id="contactsForm">
    <input type="text" value="test" />
</form>
<a href="#" class="move_to">Set action attribute.</a>
<a href="#" class="check">Check action attribute.</a>

JavaScript

$(".move_to").on("click", function(e){
    e.preventDefault();
    $('#contactsForm').attr('action', "/test1"); // .submit()
});

$(".check").on("click", function(e){
    e.preventDefault();
    alert($('#contactsForm').attr('action'));
});