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JavaScript JavaScript Foundations Arrays Methods: Part 3

I am not sure about this question.

I try to use push property. it is not working.

<!DOCTYPE html>
<html lang="en">
    <title> JavaScript Foundations: Arrays</title>
      html {
        background: #FAFAFA;
        font-family: sans-serif;
    <h1>JavaScript Foundations</h1>
    <h2>Arrays: Methods Part 2</h2>
      var first =  ["The", "quick", "brown", "fox", "jumps"]
      var second =  ["over", "the", "lazy"];
      var saying = first.concat(second.push("dog")); 
      var shortSaying = saying;
      var sayingString = saying;

1 Answer

Dan Johnson
Dan Johnson
40,532 Points

push returns the new length of the array, not the array object. You can move the push statement on to its own line:

var saying = first.concat(second); 

Or chain concat calls:

var saying = first.concat(second).concat("dog");