jQuery addClass example

Change class name on click in jQuery

by apexdodge

HTML

<div id="banner-message">
  <p id="barcode-area">Get API Key from portal.api2pdf.com</p>
  <button>Generate Barcode</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

// find elements
var barcodeArea = $("#barcode-area");
var button = $("button");

function generateBarcode(code) {
  //get api key from portal.api2pdf.com
  var apiKey = "YOUR-API-KEY";
  
  //https://www.api2pdf.com/documentation/advanced-options-zxing-zebra-crossing-barcodes
  var format = "CODE_39";
  $(barcodeArea).html('<img src="https://v2018.api2pdf.com/zebra?format='+format+'&value='+code+'&apikey='+apiKey+'" />');
}

// handle click and add class
button.on("click", function(){
  generateBarcode("Hello World");
})