Basic JavaScript Question:
Download Questions PDF

How to delete an array entry using JavaScript?

Answer:

The "delete" operator removes an array element in JavaScript , but oddly does not change the size of the array.

<script type="text/javascript">
var days = ["Sunday","Monday","Tuesday","Wednesday", "Thursday","Friday","Saturday"];
document.write("Number of days:"+days.length); delete days[4];
document.write("<br />Number of days:"+days.length);
</script>

This produces
Number of days:7
Number of days:7

Download JavaScript Interview Questions And Answers PDF

Previous QuestionNext Question
What does the delete operator do? How to use strings as array indexes using JavaScript?