[imedia]

<input type="text" class="city_" style="width:250px;display:inline-block">
<input type="submit" onclick="app_type_city()" style="display:inline-block" value="ok">


<script>
function app_type_city(){
alert(document.getElementsByClassName("city_").val ue)
location.href="?app_type=all";
}
</script>