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Old August 10th, 2008, 03:50 PM
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Default PHP dropdown list

Hi
I am a newcomer to PHP from a asp.net
I have 2 dropdown lists on my page, the first ia hard coded with 3 values, once selected I want the 2nd dropdown list to be populated based on whats selected in the first, the second list is to be populated from a mysql DB, I want to change the SQL command for it based on the option value selected in the first list. help please, i know code is messy, have been looking forums piecing together... any ideas please or even a simple example to steer me in the right direction!!
here is my code which sits in the form:

                <td>Function Type:</td>
                <td><select name="cat" onchange="return reload(this)">
                            <option value="">--------Select--------</option>
                            <option value="1" text="Hardware">Hardware</option>
                            <option value="2">Stationery</option>
                            <option value="3">System Module</option>
                    </select>

                <select name="select_subcat">
                <?php $cat=$HTTP_GET_VARS['select_fxn'];?>
                <option value="" onchange=\"return reload(this.form)\">--------Select--------</option>

                    </select>

My Javascript:
function reload(thisform)
{
    var val=document.forms['frm_regbarcode'].cat.options[document.forms['frm_regbarcode'].cat.options.selectedIndex].value;
self.location='ch_test.php?cat=' + val ;
alert(val);
// return true;

//alert('YOUR MESSAGE GOES HERE');
// return true;
}

function reload3(form)
{
    var val=document.forms['frm_regbarcode'].cat.options[document.forms['frm_regbarcode'].cat.options.selectedIndex].value;
var val2=document.forms['frm_regbarcode'].select_subcat.options[document.forms['frm_regbarcode'].select_subcat.options.selectedIndex].value;
//form.select_subcat.options[form.select_subcat.options.selectedIndex].value;

self.location='ch_test.php?cat=' + val + '&select_subcat=' + val2 ;
}
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Old September 25th, 2008, 01:15 AM
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hi mate,
try to use basic ajax script for this

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