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John Peter
Pune, Maharashtra, India
How to use call by value in Javascript functions with Example
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HTML
<div><b>How to use call by value in Javascript functions with Example</b></div>
<div>Values are not swaped in this eample because it is call by value</div>
<br />
JAVASCRIPT
function swap(num1,num2){
    num = num1;
    num1 = num2;
    num2 = num;
}

var num1 = 12;
var num2 = 24;

document.write(num1+" - "+num2+"<br />");
swap(num1,num2);
document.write(num1+" - "+num2+"<br />");
Demo & Output 
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