INTERVIEW QUESTIONS WEB JAVA SCRIPT DETAILS

Question: How to shift and unshift using JavaScript?

Answer: <script type="text/javascript">
var numbers = ["one", "two", "three", "four"];
numbers.unshift("zero");
document.write(" "+numbers.shift());
document.write(" "+numbers.shift());
document.write(" "+numbers.shift());
</script>

This produces
zero one two
shift, unshift, push, and pop may be used on the same array in JavaScript. Queues are easily implemented using combinations.

<script type="text/javascript">
var numbers = ["one", "two", "three", "four"];
numbers.unshift("zero");
document.write(" "+numbers.shift());
document.write(" "+numbers.shift());
document.write(" "+numbers.shift());
</script>

This produces
zero one two
shift, unshift, push, and pop may be used on the same array in JavaScript. Queues are easily implemented using combinations. Source: CoolInterview.com

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