添加disabled属性
$('#areaSelect').attr("disabled",true);
$('#areaSelect').attr("disabled","disabled");
移除disabled属性
$('#areaSelect').attr("disabled",false);
$('#areaSelect').removeAttr("disabled");
$('#areaSelect').attr("disabled","");
$('#areaSelect').attr("disabled",true);
$('#areaSelect').attr("disabled","disabled");
$('#areaSelect').attr("disabled",false);
$('#areaSelect').removeAttr("disabled");
$('#areaSelect').attr("disabled","");