The jQuery append() method is used to insert specified content  at the end of the selected elements in the jQuery collection.
Syntax :
$(selector).append(content, function(index, html)) 
Example :
<!DOCTYPE html>  
<html>  
<head>  
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.3/jquery.min.js"></script>  
<script>  
$(document).ready(function(){  
    $("#btn1").click(function(){  
        $("p").append(" <b>Newly added appended text</b>.");  
    });  
    $("#btn2").click(function(){  
        $("ol").append("<li><b>Newly added appended item</b></li>");  
    });  
});  
</script>  
</head>  
<body>  
<p>This is a paragraph.</p>  
<p>This is another paragraph.</p>  
<ol>  
  <li>Item no.1</li>  
  <li>Item no.2</li>  
  <li>Item no.3</li>  
</ol>  
<button id="btn1">Append text</button>  
<button id="btn2">Append item</button>  
</body>  
</html> 
Output :
This is a paragraph. Newly added appended text.
This is another paragraph. Newly added appended text.
    Item no.1
    Item no.2
    Item no.3
    Newly added appended item
                       
                    
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