Programming Tips - How can I prepend (add at the start) an element at the start of a javaScript array?

Date: 2016apr17 Language: javaScript Keywords: append Q. How can I prepend (add at the start) an element at the start of a javaScript array? A. Use unshift() like this:
var a = [ 'three', 'four', 'five' ]; a.unshift(['one', 'two']); // prepend an array at the start a.unshift('zero'); // prepend just one element