Hey amar,
You can't do anything with the alert/confirm boxes. If you need to style them then you need to use jQuery Modal dialog.
Please refer below sample.
HTML
<script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/jquery/1.7.2/jquery.min.js"></script>
<script src="https://ajax.aspnetcdn.com/ajax/jquery.ui/1.8.9/jquery-ui.js" type="text/javascript"></script>
<link href="https://ajax.aspnetcdn.com/ajax/jquery.ui/1.8.9/themes/start/jquery-ui.css"
rel="stylesheet" type="text/css" />
<script type="text/javascript">
$(function () {
$("#dialog").dialog({
buttons: {
No: function () {
$("[id*=Button1]").click();
},
Yes: function () {
$(this).dialog('close');
}
}
});
});
function Click() {
alert("button is clicked.");
}
</script>
<div id="dialog" style="display: none; color: red" title="Confirmation Message">
Did You want to close.
</div>
<input type="button" id="Button1" value="Button" style="display: none" onclick="Click();" />
Demo
