jQuery is still a strong and popular JavaScript library for processing user input and providing interactivity to online projects. It is the best option for implementing client-side validation because of its flexibility and ease of use, especially when it comes to checking for empty input fields.

Here is an example of how to validate an empty input field in Laravel using jQuery:

<form action="/submit" method="post">
  <input type="text" name="name" />
  <button type="submit">Submit</button>
</form>

Next add below code in javascript

$(document).ready(function() {
  $("form").submit(function(event) {
    var inputField = $("#name");
    if (inputField.val() === "") {
      event.preventDefault();
      alert("The name field is required.");
    }
  });
});

When the user clicks the “Submit” button, the submit event handler will be called. The event handler will check if the name input field is empty. If the input field is empty, the event handler will prevent the form from submitting and display an alert message.