I'm using this code to active Current Element. I found this code on "w3schools.com". in this code, If I refresh, the currently active element disappears. How can the element that is still active be kept active even after refresh?.
// Add active class to the current button (highlight it)
var header = document.getElementById("myDIV");
var btns = header.getElementsByClassName("btn");
for (var i = 0; i < btns.length; i++) {
btns[i].addEventListener("click", function() {
var current = document.getElementsByClassName("active");
current[0].className = current[0].className.replace(" active", "");
this.className += " active";
});
}/* Style the buttons */
.btn {
border: none;
outline: none;
padding: 10px 16px;
background-color: #f1f1f1;
cursor: pointer;
font-size: 18px;
}
/* Style the active class, and buttons on mouse-over */
.active,
.btn:hover {
background-color: #666;
color: white;
}<h1>Active Button</h1>
<p>Highlight the active/current (pressed) button.</p>
<div id="myDIV">
<button class="btn">1</button>
<button class="btn active">2</button>
<button class="btn">3</button>
<button class="btn">4</button>
<button class="btn">5</button>
</div>I solved your problem, try this
<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="width=device-width, initial-scale=1">
<style>
/* Style the buttons */
.btn {
border: none;
outline: none;
padding: 10px 16px;
background-color: #f1f1f1;
cursor: pointer;
font-size: 18px;
}
/* Style the active class, and buttons on mouse-over */
.active, .btn:hover {
background-color: #666;
color: white;
}
</style>
</head>
<body>
<h1>Active Button</h1>
<p>Highlight the active/current (pressed) button.</p>
<div id="myDIV">
<button class="btn">1</button>
<button class="btn active">2</button>
<button class="btn">3</button>
<button class="btn">4</button>
<button class="btn">5</button>
</div>
<script>
var header = document.getElementById("myDIV");
var btns = header.getElementsByClassName("btn");
for (var i = 0; i < btns.length; i++) {
btns[i].addEventListener('click', function(e){
var current = document.getElementsByClassName("active");
current[0].classList.remove('active');
this.classList.add('active');
var array = [];
array.push(btns);
localStorage.setItem('element', this.innerText);
});
}
function setActivatedItem(){
var item = localStorage.getItem('element');
if(item){
for (var a = 0; a < btns.length; a++) {
if(btns[a].innerText == item){
btns[a].classList.add('active');
}else{
btns[a].classList.remove('active');
}
}
}
}
window.onload == setActivatedItem();
</script>
</body>
</html>