<input type = "text" id = "mySearch" onkeyup = "myFunction()" placeholder = "Search..." title = "Type in a category">
<ul id = "myMenu">
<li><a href = "#"> HTML </a></li>
<li><a href = "#"> CSS </a></li>
<li><a href = "#"> JS </a></li>
<li><a href = "#"> Python </a></li>
</ul>
<style>
#mySearch {
width: 100%;
font-size: 18px;
padding: 11px;
border: 1px solid #ddd;
}
#myMenu {
list-style-type: none;
padding: 0;
margin: 0;
}
#myMenu li a {
padding: 12px;
text-decoration: none;
color: black;
display: block;
}
#myMenu li a:hover {
background-color: #eee;
}
</style>
<script>
function myFunction() {
var input, filter, ul, li, a, i;
input = document.getElementById("mySearch");
filter = input.value.toUpperCase();
ul = document.getEllementById("myMenu");
li = ul.getElementsByTagName("li");
for (i = 0; i < li.length; i++) {
a = li[i].getElementsByTagName("a")[0];
if (a.innerHTML.toUpperCase().indexOf(filter) > -1) {
li[i].style.display = "";
} else {
li[i].style.display = "none";
}
}
}
</script>