Live Demo: jQuery :attr() Method Set Multiple Attributes and Values

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<!doctype html>
<html lang="en">
<head>
<title>jQuery :attr() Method Set Multiple Attributes and Values</title>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.12.4/jquery.min.js"></script>
<script>
$(document).ready(function(){ 
    $('.mybtnsetmultiple').click(function(){
        $( ".myinputsetmultiple" ).attr({style:"background:yellow", placeholder:"Enter your name"});
    });
});
</script>
</head>
<body>
<h2>jQuery :attr() Method Set Multiple Attributes and Values</h2>   
<button type="button" class="mybtnsetmultiple">Click to Set Multiple attributes</button><br><br>
<input type="text" class="myinputsetmultiple" name="name">
</body>
</html>              
​