index.html
<!DOCTYPE html>
<html lang="en">
<body>
<ul class="uls">
<li class="lis">home</li>
<li class="lis">services</li>
<li class="lis">contact us</li>
<li class="lis">about us</li>
</ul>
<script>
const items=document.querySelectorAll('li:nth-child(odd)');
items.forEach(function(item){
item.innerHTML='i am in red color';
item.style.color='red';
});
</script>
</body>
</html>
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