I will show you how to write a JavaScript program to ask two numbers and then the program will swap the arrangement of the two numbers.
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Program Listing
index.htm
<!DOCTYPE html>
<html>
<head>
<script>
function swapping(){
var a,b,c;
a=Number(document.getElementById("first").value);
b=Number(document.getElementById("second").value);
c=a;
a=b;
b=c;
document.getElementById("answer1").value= a;
document.getElementById("answer2").value= b;
}
function clear_all(){
document.getElementById("first").value= "";
document.getElementById("second").value= "";
document.getElementById("answer1").value= "";
document.getElementById("answer2").value= "";
document.getElementById("first").focus();
}
</script>
<style>
body {
font-family: arial;
size : 15px;
};
</style>
</head>
<body>
<h2> Swapping Two Numbers in JavaScript </h2>
<h3> Before Swapping of Two Numbers </h3>
Give First Value : <input id="first"
onkeypress="return event.charCode >= 48 && event.charCode <= 57">
Give Second Value : <input id="second"
onkeypress="return event.charCode >= 48 && event.charCode <= 57"></br></br>
<button onclick="swapping()">Swap</button>
<button onclick="clear_all()">Clear</button></br></br>
<h3> After Swapping of Two Numbers </h3>
Give First Value : <input id="answer1"
onkeypress="return event.charCode >= 48 && event.charCode <= 57" readonly>
Give Second Value : <input id="answer2"
onkeypress="return event.charCode >= 48 && event.charCode <= 57" readonly>
</body>
</html>
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