input输入框定位select选项

 

<script>
function findinfo(){
        var input_val = document.getElementById('find_location').value;
        if(input_val != '')
        {
                var my_select = document.getElementById('location');
                var sel_len = my_select.length;
                for(var i = 0 ; i < sel_len ; i++)
                {
                        if(my_select.options[i].text == input_val)
                        {
                                my_select.options[i].selected = true;
                                break;
                        }
                }
        }
}
</script>

<select name="location" id="location" onchange="checkinfo_location();" >
<option value="0" >全国</option>
<option value="1" >北京</option>
<option value="2" >天津</option>
</select>

 

搜索地区:<input type="text" name="find_location" id="find_location" value="" onkeyup="findinfo();" />