jQuery toggleClass example

Toggle class name on click in jQuery

by Seetpal Singh

HTML

<div id="banner-message">
  <p>Hello World</p>
  <input type="file" />
  <img id='img' alt="">
</div>

CSS

body {
  background: #20262E;
  padding: 20px;
  font-family: Helvetica;
}
img{
  width: 100px
}

#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

// get a reference to the file input
const fileInput = document.querySelector("input");

// listen for the change event so we can capture the file
fileInput.addEventListener("change", (e) => {
  // get a reference to the file
  const file = e.target.files[0];

  // encode the file using the FileReader API
  const reader = new FileReader();
  reader.onloadend = () => {
    // log to console
    // logs data:<type>;base64,wL2dvYWwgbW9yZ...
    console.log('bob = ' + reader.result);
    const img = document.getElementById('img')
    img.setAttribute('src', reader.result)
  };
  reader.readAsDataURL(file);
});