In this article, I would like to share with you a sample program using HTML forms and JavaScript that allows the user to find the sum of the two numbers.
<html>
<head>
<title>Addition of Two Numbers in JavaScript</title>
<script language="javascript">
function addNumbers()
{
var val1 = parseInt(document.getElementById("value1").value);
var val2 = parseInt(document.getElementById("value2").value);
var ansD = document.getElementById("answer");
ansD.value = val1 + val2;
}
</script>
</head>
<body>
value1 = <input type="text" id="value1" name="value1" value="1"/>
value2 = <input type="text" id="value2" name="value2" value="2"/>
<input type="button" name="Sumbit" value="Click here" onclick="javascript:addNumbers()"/>
Answer = <input type="text" id="answer" name="answer" value=""/>
</body>
</html>
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Sample Program Output
Program Listing
<html>
<head>
<title>Addition of Two Numbers in JavaScript</title>
<script language="javascript">
function addNumbers()
{
var val1 = parseInt(document.getElementById("value1").value);
var val2 = parseInt(document.getElementById("value2").value);
var ansD = document.getElementById("answer");
ansD.value = val1 + val2;
}
</script>
</head>
<body>
value1 = <input type="text" id="value1" name="value1" value="1"/>
value2 = <input type="text" id="value2" name="value2" value="2"/>
<input type="button" name="Sumbit" value="Click here" onclick="javascript:addNumbers()"/>
Answer = <input type="text" id="answer" name="answer" value=""/>
</body>
</html>
