Javascript Array assignement by reference


If you assign an array to another array, it creates a pointer to it. So any change in the value of one array affects the value of the other.

Take a look at the following example


<html>
<body>

<script type="text/javascript">
var myArray = [0,1,2,3,4];
var newArray= myArray;
newArray[1] = 100;
myArray[0] = 50;

document.writeln(myArray[1] + '<br>');
document.writeln(newArray[0] + '<br>');
</script>

</body>
</html>

Try this example online here .