freeCodeCamp/curriculum/challenges/japanese/02-javascript-algorithms-and-data-structures/basic-javascript/manipulate-arrays-with-push.md

id, title, challengeType, videoUrl, forumTopicId, dashedName

id	title	challengeType	videoUrl	forumTopicId	dashedName
56bbb991ad1ed5201cd392cb	push メソッドによる配列の操作	1	https://scrimba.com/c/cnqmVtJ	18237	manipulate-arrays-with-push

--description--

An easy way to append data to the end of an array is via the push() method.

The push() method takes one or more arguments and appends them to the end of the array, in the order in which they appear. It returns the new length of the array.

例:

const arr1 = [1, 2, 3];
arr1.push(4, 5);

const arr2 = ["Stimpson", "J", "cat"];
arr2.push(["happy", "joy"]);

arr1 now has the value [1, 2, 3, 4, 5] and arr2 has the value ["Stimpson", "J", "cat", ["happy", "joy"]].

--instructions--

["dog", 3] を myArray 変数の末尾に push してください。

--hints--

myArray は [["John", 23], ["cat", 2], ["dog", 3]] になる必要があります。

assert(
  (function (d) {
    if (
      d[2] != undefined &&
      d[0][0] == 'John' &&
      d[0][1] === 23 &&
      d[2][0] == 'dog' &&
      d[2][1] === 3 &&
      d[2].length == 2
    ) {
      return true;
    } else {
      return false;
    }
  })(myArray)
);

--seed--

--after-user-code--

(function(z){return 'myArray = ' + JSON.stringify(z);})(myArray);

--seed-contents--

// Setup
const myArray = [["John", 23], ["cat", 2]];

// Only change code below this line

--solutions--

const myArray = [["John", 23], ["cat", 2]];
myArray.push(["dog",3]);