JSFiddle - React, Tailwind, and code Playground
by Mohammed Sameer
HTML
<input type="text" class="form-control pro-input valfields" id="product-unit-price-1" name="unit_price[]" >
<input type="text" class="form-control pro-input valfields" id="product-unit-price-2" name="unit_price[]" >
<input type="text" class="form-control pro-input valfields" id="product-unit-price-3" name="unit_price[]" >
<input type="text" class="form-control pro-input valfields" id="product-unit-price-4" name="unit_price[]" >
JavaScript
$("input[id^='product-unit-price-']").keydown(function (event) {
$(this).css('background','#000');
}).keyup(function (event) {
$(this).css('background','#fff');
});