Help us understand the problem. What is going on with this article?

javascript object 操作メモ

More than 1 year has passed since last update.
var tempObj = {Area:["tiyodaku","minatoku","tyuuouku"], range: "0km-10km"};
// 配列だった場合の追加の作法
if(tempObj.Area instanceof Array) {
  console.log( tempObj.Area.length + 'array' );
  tempObj.Area[tempObj.Area.length] = "add area";
  console.log( tempObj );
} else {
  console.log('tempObj.Area not array');

// 配列じゃなかった場合の追加の作法
if(tempObj.range instanceof Array) {
  console.log( tempObj.range.length + 'array' );
} else {
  console.log( tempObj.range + 'array' );
  tempObj.range = [tempObj.range,"add range"];
  console.log( tempObj );
Why not register and get more from Qiita?
  1. We will deliver articles that match you
    By following users and tags, you can catch up information on technical fields that you are interested in as a whole
  2. you can read useful information later efficiently
    By "stocking" the articles you like, you can search right away