PHP/JavaScript Dropdown option onChange

@kingdmJun 09.2010 — #Hi shiva.

As I far as I understand your concern, I guess what you really need is a multiple drop-down written in JavaScript, then the PHP can be used to fetch the values from those drop-down. Try googling for it, learn from it then write your own to suit what you want, post it in the JavaScript section if ever you have any problems.

Cheers. ?

@shiva_mariselaauthorJun 11.2010 — #This is what I'm trying to achieve..When user selects value 2 from the first dropdown, it should change value of second dropdown 'order2' to 1..basically swapping the value of two different dropdown.

In the Javascript I check if the selected value from first drop down matches the element from second drop down..but I can't put a logic to swap values

<tr><td>

<select name='order1' onchange='UpdateColumnOrder(this)' >

<option value=1 >1</option>

<option value=2 >2</option>

<option value=3 >3</option>

</select>

</tr></td>



<tr><td>

<select name='order2' onchange='UpdateColumnOrder(this)' >

<option value=1 >1</option>

<option value=2 selected >2</option>

<option value=3 >3</option>

</select>

</tr></td>

function UpdateColumnOrder(elt){

//check for duplicate selections

var form=elt.form;

var name=elt.name;

var index=elt.selectedIndex

//loop through all form elements

for(var i=0;i<form.length;i++){

var_name=form.elements[i].name;

var_index=form.elements[i].selectedIndex;

// if form element is not the current element

// and the division name is the same, raise

//error message

if(var_name!=name&&index!=0&&var_index==index){

elt.selectedIndex=0;

elt.focus();

return false;

}

}

return true;

}

PHP/JavaScript Dropdown option onChange

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