JavaScript Call by Reference
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What is call by reference?
In call by reference, any changes made to formal parameters will affect the actual parameters.
Example
HTML Online Editor
<!DOCTYPE html>
<html>
<body>
<p>Check your console. (Press F12)</p>
<script>
var x = document.getElementById("point");
var arr = [1, 2, 3];
var obj = {brand:"Honda", color:"Red"};
function myFunction(a, b){
a[2] = 6;
b.color = "green";
}
myFunction(arr, obj);
console.log("arr : "+ arr);
console.log("obj : "+ JSON.stringify(obj))
</script>
</body>
</html>
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