<html>
<head>
<script src="../../ajax.googleapis.com/ajax/libs/jquery/3.4.0/jquery.min.js"></script>
<script>
$(document).ready(function(){
$("button").click(function(){
$("input:text").val("Glenn Quagmire");
});
});
</script>
</head>
<body>
<p>Name: <input type="text" name="user"></p>
<button>Set the value of the input field</button>
</body>
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</html>