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Javascript: assign value to hidden form element

Posted on 2017-08-14
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Last Modified: 2017-08-14
Thank you for looking at my question,

I have a user input form (php) that has some javascript validation which should, if the conditions are met, assign a value to a hidden form element but it isn't working and I can't see why.
	<form name="Form1" action="Forms/Section1.php" method="GET" onSubmit="return jsValidate()">
		<input type="hidden" name="StockItem" />

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The javascript validation looks like this
if (z.length == 23){
	if (z.slice(0,2) == "VE" || z.slice(0,2) == "SE"){
		
		//alert("So Far So Good");
		
		document.getElementById("StockItem").value = 1; //Full Build
		alert (document.getElementById("StockItem").value);
	} else {
		errorcount++;
		document.getElementById('VECO').style.color='#FF0000';
	}
} else if (checknum==1){
	
	//alert("So Far So Good");
	
	document.getElementById("StockItem").value = 0; //Component
	alert ("Assembly Stock Item: " + document.getElementById("StockItem").value);
} else {
	errorcount++;
	document.getElementById('VECO').style.color='#FF0000';
}

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If either of the conditions are met (z == 23 characters starting VE or SE, or checknum == 1)  then, when it's not commented out, the "So Far So Good" alert appears on the screen but the following
alert(document.getElementById("StockItem").value);

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doesn't
and no value is assigned to the StockItem element - as can be seen in the address of the php page the data should pass to
http://xx.xx.xx.xx/ed1/Forms/Section1.php?StockItem=&Meter=1000&ProdnOrder=553456789&SalesOrder=9999&SerialNo=&VECode=VE884S05E0G0T01D0004000

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What am I missing?
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Question by:Crxfrd
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2 Comments
 
LVL 31

Accepted Solution

by:
Marco Gasi earned 2000 total points
ID: 42253496
The element you want assign a value to has no id, onky the name. Just change it to this
	<form name="Form1" action="Forms/Section1.php" method="GET" onSubmit="return jsValidate()">
		<input type="hidden" name="StockItem" id="StockItem" />

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0
 

Author Closing Comment

by:Crxfrd
ID: 42253501
Bingo! Thank you
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