jQuery addClass example

Change class name on click in jQuery

by toreaurstad

HTML

<div id="banner-message">
  <p>Randomiseringsknapp</p>
  <select id="icecreambar">
  <option value="vanilla">Chocolate</option>
  <option value="strawberry">Strawberry</option>
  </select>
  <button>Change color</button>
</div>

CSS

body {
  background: #20262E;
  padding: 20px;
  font-family: Helvetica;
}
option:selected {
  display: none;
}

#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 banner = $("#banner-message")
var button = $("button")

// handle click and add class
button.on("click", function(){
  banner.addClass("alt")
})

jQuery.fn.toggleOption = function( show ) {
    jQuery( this ).toggle( show );
    if( show ) {
        if( jQuery( this ).parent( 'span.toggleOption' ).length )
            jQuery( this ).unwrap( );
    } else {
        if( jQuery( this ).parent( 'span.toggleOption' ).length == 0 )
            jQuery( this ).wrap( '<span class="toggleOption" style="display: none;" />' );
    }
};

$('#icecreambar').on('select', function(){
$('#icecrea')

});