jQuery toggleClass example

Toggle class name on click in jQuery

by jimkennelly

HTML

<div id="banner-message">
  <p>Hello World</p>
  <button onclick="validateRailCar('ABC 123');")>Change color</button>
</div>

CSS

body {
  background: #20262E;
  padding: 20px;
  font-family: Helvetica;
}

#banner-message {
  background: #fff;
  border-radius: 4px;
  padding: 20px;
  font-size: 25px;
  text-align: center;
  transition: all 0.2s;
  margin: 0 auto;
  width: 300px;
}

button {
  background: #0084ff;
  border: none;
  border-radius: 5px;
  padding: 8px 14px;
  font-size: 15px;
  color: #fff;
}

#banner-message.alt {
  background: #0084ff;
  color: #fff;
  margin-top: 40px;
  width: 200px;
}

#banner-message.alt button {
  background: #fff;
  color: #000;
}

JavaScript

function validateRailCar(CarID) {


        var reg = '(?=^.{1,10}$)^([A-Z]{1,4}\s*[0-9]{1,6})$'

        if (CarID.match(reg)) {
        alert("OK");
            return true;
        } else {
        alert("bad");
            return false
        }
}