{"blog_title":"\u306d\u3053\u306e\u8db3\u8de1R","categories":["JavaScript","\u914d\u5217","\u6700\u5927\u5024","\u6700\u5c0f\u5024","reduce","HTML5"],"height":"190","provider_url":"https://hatena.blog","width":"100%","description":"reduce()\u306f\u914d\u5217\u5185\u306e\u5024\u3092\u9806\u756a\u306b\u51e6\u7406\u3057\u3066\u3044\u304d\u3001\u6700\u7d42\u7684\u306b1\u3064\u306e\u5024\u3092\u751f\u6210\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002 /** * \u914d\u5217\u306e\u5024\u3092\u3059\u3079\u3066\u8db3\u3059 */ const list = [1, 2, 3, 4, 5] const sum = list.reduce( (prev, current) => prev + current ) // 15 console.log(sum) return\u3057\u305f\u5024\u304c\u3001\u6b21\u306b\u51e6\u7406\u3059\u308b\u969b\u306eprev\u306b\u5165\u3063\u3066\u3044\u307e\u3059\u3002return\u3059\u308b\u5024\u306f\u6587\u5b57\u5217\u3084\u6570\u5024\u4ee5\u5916\u306b\u306f\u914d\u5217\u3084\u30cf\u30c3\u30b7\u30e5\u3067\u3082\u304b\u307e\u3044\u307e\u305b\u3093\u3002\u521d\u898b\u3060\u3068\u3061\u3087\u3063\u3068\u7406\u89e3\u3057\u306b\u304f\u3044\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u306d\uff57","type":"rich","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fblog.katsubemakito.net%2Fhtml5%2Fjs-array-reduce\" title=\" [JavaScript] \u914d\u5217\u304b\u3089\u3072\u3068\u3064\u306e\u5024\u3092\u751f\u6210\u3059\u308b - reduce() - \u306d\u3053\u306e\u8db3\u8de1R\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","published":"2021-03-27 22:44:28","version":"1.0","author_url":"https://blog.hatena.ne.jp/katsube/","image_url":null,"author_name":"katsube","blog_url":"https://blog.katsubemakito.net/","title":" [JavaScript] \u914d\u5217\u304b\u3089\u3072\u3068\u3064\u306e\u5024\u3092\u751f\u6210\u3059\u308b - reduce()","provider_name":"Hatena Blog","url":"https://blog.katsubemakito.net/html5/js-array-reduce"}