{"categories":["JavaScript"],"provider_url":"https://hatena.blog","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fchaika.hatenablog.com%2Fentry%2F2016%2F03%2F11%2F190153\" title=\"javascript \u6587\u5b57\u5217\u4e2d\u306e\u6587\u5b57\u3092\u53d6\u5f97 - \u304b\u3082\u30e1\u30e2\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","type":"rich","published":"2016-03-11 19:01:53","blog_url":"https://chaika.hatenablog.com/","version":"1.0","provider_name":"Hatena Blog","description":"\u6587\u5b57\u5217\u4e2d\u306en\u756a\u76ee\u306e\u6587\u5b57\u3092\u53d6\u5f97\u3057\u305f\u3044\u3068\u304b\u3001\u304c\u3042\u308b\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u3002 javascript\u306e\u6587\u5b57\u5217\u3067\u306flength\u3067\u6587\u5b57\u6570\u304c\u6e2c\u308b\u3053\u3068\u304c\u3067\u304d\u3001\u914d\u5217\u306e\u3088\u3046\u306b\u30a2\u30af\u30bb\u30b9\u3059\u308b\u3068\u6587\u5b57\u5217\u306e\u5148\u982d\u304b\u3089\u9806\u756a\u306b\u6587\u5b57\u3092\u53d6\u5f97\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002 \u9700\u8981\u3042\u308b\u3093\u3067\u3057\u3087\u3046\u304b\u306d\u3002\u307e\u3041\u3044\u3044\u3084\u3002 var str = 'abcdefghijklmn'; // \u6587\u5b57\u6570 cosole.log( str.length ); // 14 // 10\u756a\u76ee\u306e\u6587\u5b57 \u203b 0\u304b\u3089\u30ab\u30a6\u30f3\u30c8\u3059\u308b cosole.log( str[9] ); // \"j\" \u6587\u5b57\u5217\u304b\u30891\u6587\u5b57\u3060\u3051\u53d6\u5f97\u3057\u305f\u3044\u3068\u304b\u306e\u6642\u306fslice()\u3088\u308a\u6dfb\u5b57\u3067\u53d6\u5f97\u3057\u3066\u3057\u307e\u3063\u305f\u65b9\u304c\u7c21\u5358\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u3002 \u6587\u5b57\u2026","author_url":"https://blog.hatena.ne.jp/kikiki-kiki/","blog_title":"\u304b\u3082\u30e1\u30e2","width":"100%","author_name":"kikiki-kiki","height":"190","image_url":"http://ecx.images-amazon.com/images/I/41JIdmRR14L.jpg","url":"https://chaika.hatenablog.com/entry/2016/03/11/190153","title":"javascript \u6587\u5b57\u5217\u4e2d\u306e\u6587\u5b57\u3092\u53d6\u5f97"}