Replace the new lines with <br>
The reason is that in HTML new lines are made by the <br> tag
var message = "Hello Name, Choose one of the options below.<br>
1. Phones<br>
2. Computers"
$('.item').html(message);
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<div class="item"></div>
与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…