I have also tried .('refresh') and .page() to no avail.
The text-box updates but not the slider position, so as soon as you touch it, the value drops back down. You can see this behavior here: http://www.webeshoppin.info/st0.html
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>Tax</title>
<link rel="stylesheet" href="http://code.jquery.com/mobile/1.1.0-rc.1/jquery.mobile-1.1.0-rc.1.min.css" />
<link href="css/tax.css" rel="stylesheet" type="text/css" />
<script src="http://code.jquery.com/jquery-1.7.1.min.js"></script>
<script src="http://code.jquery.com/mobile/1.1.0-rc.1/jquery.mobile-1.1.0-rc.1.min.js"></script>
</head>
<body>
<div id="page2" data-role="page" data-add-back-btn="true">
<div data-role="header">
<h4> The Proposed</h4>
<a href="#decisions" data-icon="arrow-r" data-role="button" id="joinls">next</a>
</div><!-- /header -->
<div data-role="content">
<h5>Ducks are Fum</h5>
<div>
<input type="range" min="0" max="150" id="inp1" value="34"/>
</div>
<div>
<a id="but1" href="#" data-role="button" data-mini="true" >but1</a>
</div>
<div id="txthere"></div>
</div>
</div>
</body>
</html>
<script>
var data =87;
$('#page2').live('pageinit', function(event) {
$("#inp1").val(data).trigger('create');
$("#but1").click( function (e) {
data +=1;
console.log(data);
$("#txthere").append(data+'<br/>');
});
$("#inp1").change( function(e){
data = Number($(this).val());
console.log(data);
$("#txthere").append(data+'<br/>');
});
});
</script>
You should use
.slider('refresh')to refresh the widget rather than.trigger('create')which is meant to initialize an un-initialized widget.
Source: http://jquerymobile.com/demos/1.1.0-rc.1/docs/forms/slider/methods.html
Here is a demo: http://jsfiddle.net/s63pt/