Styling application in JavaScript
Let's make a button, by clicking on which
the element will be either shown or hidden.
Let the element be hidden by default (this
is implemented using
display: none),
and it will be shown by adding the class
active . This class will be either
added or removed using classList.toggle:
<button id="button">click me</button>
<div id="elem"></div>
#elem {
display: none;
width: 200px;
height: 200px;
border: 1px solid green;
}
#elem.active {
display: block;
}
let button = document.querySelector('#button');
let elem = document.querySelector('#elem');
button.addEventListener('click', function() {
elem.classList.toggle('active');
});
:
