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JavaScript JavaScript Foundations Arrays Methods: Part 1

Yusuf Salaam
Yusuf Salaam
1,748 Points
Posted by Yusuf Salaam
Yusuf Salaam
1,748 Points

Im getting stuck on step 3 of array challenge. Can someone please show me how to do it?

var spareWords = ["The","chimney","sweep's","dog"];
console.log(spareWords.toString())

//Shift and unshift method
var firstWord = spareWords.shift();
spareWords.unshift("firstWord");
console.log(spareWords.toString())

//Push Pop method
console.log(spareWords.toString())

spareWords.push("lastWord");
console.log(spareWords.toString())

var lastWord = spareWords.pop();
console.log(spareWords.toString())
var lastWord = spareWords.pop();
      var saying = ["quick", "brown", "fox", "jumps", "over", "the", "lazy"];

This is what I have so far!

2 Answers

Ryan Carson
Ryan Carson
23,287 Points
Ryan Carson
Ryan Carson
23,287 Points

I'll give you a tip ...

var spareWords = ["The","chimney","sweep's","dog"];
var saying = ["quick", "brown", "fox", "jumps", "over", "the", "lazy"];
/* var firstWord = spareWords.do-something-here */
/* var lastWord = spareWords.do-something-here */
/* saying.do-something-here */
/* saying.do-something-here */
Peter Szerzo
Peter Szerzo
22,661 Points
Peter Szerzo
Peter Szerzo
22,661 Points

sorry, Ryan, for giving it away :)

Peter Szerzo
Peter Szerzo
22,661 Points
Peter Szerzo
Peter Szerzo
22,661 Points

Hey Yusuf,

Try this:

var firstWord = spareWords.shift();

var lastWord = spareWords.pop();

saying.unshift(firstWord);

saying.push(lastWord);

The array commands are as follows: push - add element to end of the array pop - take element off the end of the array (and return it) unshift - add element to the beginning of the array shift - take element off the beginning of the array (and return it)

This article might help: http://www.bennadel.com/blog/1796-javascript-array-methods-unshift-shift-push-and-pop.htm

Also, fun conversation on why these methods are named as they are: http://www.perlmonks.org/?node_id=613124

Cheers, Peter