Javascript/PHP Nightmares

beyers

Howzit all

I need help again with bit of code. What it should do is calculate a total automatically as soon as the unit_price value and markup percentage value is added.into a textbox, and then it must write those values to database with all the other from an invoice page. How on earth do I do it, because so far I cant get it to calculate let alone write to db. pLease please help me?

Oh yes, and what would be a class in javascript to use rather than math.round because it rounds my values to 1, I want a decimal of 2. Please help.
And how can I in this below piece of code add every price coming through to eache other so that I have a correct total to display and not every value added on to each other Eg the way it is now 11131617 if i had 4 respective values 11, 13, 16, 17.

Here the javascript code:

our_price.value = Math.round((price+(price*(markup/100)))*100)/100;		total_total.value = total_total.value+our_price.value;

}
//--><!--
function checkForm()
{
var f = document.stockForm;

	else if (f.stock_description.value == '')
	{
		alert('Please enter a valid stock Description!');
		return false;
	}
	else if (f.stock_type_ID.value == '')
	{
		alert('Please enter a valid stock Type!');
		return false;
	}
	else if (f.stock_unitprice.value == '' || isNaN(parseInt(f.stock_unitprice.value)) || parseInt(f.stock_unitprice.value) < 0)
	{
		alert('Please enter a valid stock unit price!');
		return false;
	}
}

function kH(e) {
var pK = document.all? window.event.keyCode:e.which;
return pK != 13;
}
document.onkeypress = kH;
if (document.layers) document.captureEvents(Event.KEYPRESS);
//-->

</script>

And heres the php code;

<?php
print ("<td align=\"center\">R<input type=\"text\" value=\"stock_unitprice\">". $stock['stock_unitprice'] ."</td>
<td><input type=\"text\" size=2 value=\"stock_markup\" onkeyup=\"calc(" . $stock['stock_unitprice'] . ",this.value)\">%</td>
<td>R <input type=\"text\" size=7 value=\"stock_ourprice\" id=\"markup\"></td>
");

<tr>
<td height="43" align="right" class="header">TOTAL(Incl):</td>
<td><strong>R</strong><input type="text" id="total_total" value="" size="10"></td>
</tr>

maxpup979

to calc the unit price, once the two form fields are filled, you can use onChange to call your JS function....

something like:

then in the form elements use:
<input type="text" value="whatever your default value needs to be" name="stock_unitprice" onChange="IsItReady(formname)">

Im thinking that this code isnt quite right (its way too early today), but hopefully you get the basic idea....

beyers

Howzit there, thanks for the reply. But this unfortunately didnt work and still cant get such a simple thing to work. What am I doing wrong? Is there any other method?
Thanks

maxpup979

If you are looking to update a formfield before completing the submit, then you are pretty much stuck using JS. So what didnt work? are you getting an error? just not functioning properly? Are you using firefox/mozilla to debug the JS?

maxpup979

I tested this--the basic stuff works....

<script type="text/javascript">
function IsItReady(form){
if((form.var1.value!="")&&(form.var2.value!="")){
form.var3.value=form.var1.value*form.var2.value;
}
}
</script>
</head>

<body>
<form name="test" method = "post">
<input type = "text" name="var1" value="" onChange="javascript: IsItReady(form);">
<input type = "text" name="var2" value="" onChange="javascript: IsItReady(form);">
<input type = "text" name="var3" value="">
</form>
</body>
</html>