[Gaug]

Hello.

I have this code in a cycle that runs for a certain number of times:

PHP Code:

<input name="nombre[<?php echo $z;?>]" type="text" value="0.00" onkeyup="total.value = <?php echo $monto;?> - this.value."/>

What I am trying to do is, in the variable '$monto' I have a number, then every time you go for the cycle, let's say three times in the text box that is up, I will put up numbers, let's say '$monto= $ 15,000' and the three text boxes that will be created, will have these values 10000, 1000 and 1500.

I have another box:

PHP Code:

<input type="text" name="total" id="total" value="" disabled> 

I assumed, or what I had planned was taking into account what I put before, you should see '2500' on the box 'total', as subtracting 10000, 1000 and 1500 to 15000 is'2500,' but nothing happens . Any idea what might I be doing wrong?

Thanks in advance.

Greetings.

[ruteckycs]

Hmmm. Your a little vague here. Well actually your a ton vague and your providing only the minimal code.
First of this is PHP code, your asking for help in a JavaScript form.

Second off the second code box is not PHP or JavaScript, it is HTML

That being said if your trying to subtract a value from the variable $monto then just subtract it like this:

<?php
$monto=$monto-1000;
?>

if your trying to display the variable in the second code box change that line to this:

<input type="text" name="total" id="total" value="<?php echo $monto; ?>">

[wirehopper]

Code:

total.value = <?php echo $monto;?> - this.value.

Change total.value. to total.value;, or better yet:

Code:

document.getElementById('total').value=<?php echo $monto;?>-this.value

You might want to post a bit more code to make it easier to understand.

[Gaug]

First of all, thanks for replying.

I know I posted PHP and HTML code, but it was neccesary for you to understand what I'm looking for.

As I said before the first text box belongs to a 'for' cycle, like this:

PHP Code:

<?php
for($q=$mes;$q<=$mes_ini2;$q++) {  ?>
        
        <td><input name="nombre[<?php echo $z;?>]" type="text" value="0.00" id="valor"  onkeyup="document.getElementById('total').value=<?php echo $monto;?>-this.value"  /></td>
        <?php
        }
                ?>

So it doesn't make a certain quantity of boxes, that could be the problem but I don't know much about javascript.

I tried what you told me, wirehopper, but it doesn't seem to work alright, maybe because what I just said, hope you or someone else can help me out.

Thanks in advance.

EDIT: I tried to make a function in JavaScript, something like this:

Code:

function restar() {
    for (var i=0; i<cajas.length; i++) {
        cajas[i] = document.getElementById('valor'+i).value;
        monto -= cajas[i];
		
    }
        document.getElementById('total').value = monto;
}

But in the textbox where it should show the amount left, it just shows the value of '$monto' and it doesn't substract, doesn't matter what I write in the boxes that belong to the 'for' cycle.

Hope it's easier for you to help me with this function.

Greetings.