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$("#Province option:selected").text()
var Province =document.getElementById('Province');
alert(Province.options[Province.selectedIndex].innerText);
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
<title>JavaScript</title>
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.4/jquery.min.js" type="text/javascript"></script>
<script type="text/javascript">
show = function(){
alert($("#promanagername option:selected").text());
};
</script>
</head>
<body>
<select onchange="show()" id="promanagername" name="promanagername" class="select"><option value="5">不显示删除回复</option><option value="0">显示所有回复</option><option value="1" selected>显示星级回复</option><option value="3">显示得分回复</option><option value="4">黄山</option></select>
</body>
</html>
$.trim($("#Province").text())
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
<title>JavaScript</title>
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.4/jquery.min.js" type="text/javascript"></script>
<script type="text/javascript">
$(function(){
json = {'promanagername':'黄山'};
$("select[name='promanagername'] option:contains('" + json.promanagername + "')").attr("selected","selected");
})
</script>
</head>
<body>
<select id="promanagername" name="promanagername" class="select"><option value="5">不显示删除回复</option><option value="0">显示所有回复</option><option value="1">显示星级回复</option><option value="3">显示得分回复</option><option value="4">黄山</option></select>
</body>
</html>