{"author_url":"https://blog.hatena.ne.jp/Cherenkov/","version":"1.0","width":"100%","provider_url":"https://hatena.blog","image_url":null,"height":"190","blog_title":"Cherenkov\u306e\u6697\u4e2d\u6a21\u7d22\u306b\u3063\u304d","type":"rich","author_name":"Cherenkov","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fcherenkov.hatenadiary.org%2Fentry%2F20081204%2Fp1\" title=\"\u914d\u5217\u306e\u91cd\u8907\u3092\u30c1\u30a7\u30c3\u30af\u3059\u308b\u3002 - Cherenkov\u306e\u6697\u4e2d\u6a21\u7d22\u306b\u3063\u304d\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","description":"JavaScript \u3067\u914d\u5217\u306b\u3042\u308b\u5024\u304c\u542b\u307e\u308c\u3066\u3044\u308b\u304b\u8abf\u3079\u308b - Reread \u3053\u308c\u3092\u305d\u306e\u307e\u307e\u4f7f\u308f\u305b\u3066\u3082\u3089\u3063\u3066\u305f\u3002 \u4f7f\u3044\u65b9\u306f\u3053\u3046\u3002 var ary = new Array( 1,5,10 ); alert( ary.contains(10) ); // true alert( ary.contains(24) ); // false \u3068\u3053\u308d\u304c Array.prototype.contains = function(value){ for(var i in this){ if( this.hasOwnProperty(i) && this[i] === value){ return true; }\u2026","published":"2008-12-04 00:00:01","provider_name":"Hatena Blog","url":"https://cherenkov.hatenadiary.org/entry/20081204/p1","title":"\u914d\u5217\u306e\u91cd\u8907\u3092\u30c1\u30a7\u30c3\u30af\u3059\u308b\u3002","blog_url":"https://cherenkov.hatenadiary.org/","categories":["javascript"]}