JSFiddle - React, Tailwind, and code Playground
by sperske
HTML
<input type="text" name="BoqTextBox" id="BoqTextBox" value="0.001" />
<input type="Button" id='AddButton' value="+" />
JavaScript
$('#AddButton').on('click', function () {
var input = $('#BoqTextBox');
input.val(parseFloat(input.val(), 10) + 1);
})