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for(var i=0;i<json.depart.length;i++)
{
if(json.promanagername == json.depart[i].username){
$("#reviewperson").append("<option value='"+json.depart[i].username+"' selected >"+json.depart[i].username+"</option>");
}
else{
$("#reviewperson").append("<option value='"+json.depart[i].username+"'>"+json.depart[i].username+"</option>");
}
}
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<title>测试用页面</title>
<style>
</style>
</head>
<body>
<select id="sel">
<option value="红山">红山</option>
<option value="绿山">绿山</option>
<option value="黑山">黑山</option>
<option value="黄山">黄山</option>
</select>
<script>
function setSelectByValue(domSelect,strVal){
var opts = domSelect.options;
for(var i=0,j=opts.length;i<j;i++)
if(opts[i].value===strVal)return domSelect.selectedIndex=i;
}
setSelectByValue(document.getElementById('sel'),'黄山');
</script>
</body>
</html>
<!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>
<!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[value='" + 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="黄山">黄山</option></select>
</body>
</html>