城市选择控件
#Usage
html:
省：<select name="province" id="province"></select>
市：<select name="city" id="city"></select>
区：<select name="area" id="area"></select> js:
<script src="assets/js/city.js"></script>
<script>
$(function(){
city_selector();
});
</script>#Settings
var config = {
province: '#province',
city: "#city",
area: "#area",
};
city_selector(config);