Addition not working in jquery

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Addition not working in jquery....i added jquery file correctly but its addition not working

HTML

<html>
<head>
<script type="text/javascript" src="jquery-1.12.1.min.js"></script>
<script type="text/javascript" >
$(document).ready(
function(){
$("#sub").click(
 
 var a=$("#txfirstno").val;
 var b=$("#txsecondno").val; 
  $("#result").val(a+b);
  
  );})

</script>
</head>
<body>
<form Name="vontact"id="main">
First NO:<input type="text" id="txfirstno"/></br>
Second No:<input type="text" id="txsecondno"/></br>
Answer:<input type="text" id="result"/></br>
<input type="button" id="sub" text="ok"/></br>
</form>
</body>
</html>

What I have tried:

i added jquery file correctly but its addition not working.

Posted 25-Feb-16 6:45am

Member 10234718

Updated 25-Feb-16 7:11am

v2

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Manas_Kumar · Accepted Answer · 2016-02-25T07:11:00

There is curly bracket mismatch and secondly it was not parsing correctly so it was not working. Try with below code:

HTML

<html>
	<head>
	<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.12.0/jquery.min.js"></script>
	<script type="text/javascript" >
		$(document).ready(function(){
			// Handling sub button click
			$("#sub").click(function(){
				var a=parseInt($("#txfirstno").val());
				var b=parseInt($("#txsecondno").val()); 
				$("#result").val(a+b);
			});

			// To allow only numbers in text boxes
			$('#txfirstno, #txsecondno').keydown(function (e) {
				if (e.shiftKey || e.ctrlKey || e.altKey) {
					e.preventDefault();
				} 
				else 
				{
					var key = e.keyCode;
					if (!((key == 8) || (key == 46) || (key >= 35 && key <= 40) || (key >= 48 && key <= 57) || (key >= 96 && key <= 105))) {
						e.preventDefault();
					}
				}
			});
		});

	</script>
	</head>
	<body>
	<form Name="vontact"id="main">
		First NO:<input type="text" id="txfirstno"/>
		Second No:<input type="text" id="txsecondno"/>
		Answer:<input type="text" id="result"/>
		<input type="button" id="sub" value="ok"/>
	</form>
	</body>
</html>