{"id":2373,"date":"2021-11-22T11:34:06","date_gmt":"2021-11-22T02:34:06","guid":{"rendered":"https:\/\/www.buddy.info-lab.co.jp\/?p=2373"},"modified":"2021-11-26T15:54:25","modified_gmt":"2021-11-26T06:54:25","slug":"21-11-22%e3%80%80%e3%80%90%e3%83%97%e3%83%ad%e3%82%b0%e3%83%a9%e3%83%9f%e3%83%b3%e3%82%b0%e3%81%ae%e7%bd%a0%e3%80%91%e7%a9%ba%e6%96%87%e5%ad%97%e5%88%97%e3%80%81null%e3%80%81undefined","status":"publish","type":"post","link":"https:\/\/www.buddy.info-lab.co.jp\/?p=2373","title":{"rendered":"21.11.22\u3000\u3010\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u306e\u7f60\u3011\u7a7a\u6587\u5b57\u5217\u3001null\u3001undefined"},"content":{"rendered":"<p>\u4eca\u56de\u304b\u3089\u300c\u30c6\u30af\u30cb\u30ab\u30eb\u30b3\u30e9\u30e0\u300d\u3068\u3057\u3066\u3001Buddy\u3067\u306e\u30a2\u30d7\u30ea\u958b\u767a\u306b\u307e\u3064\u308f\u308b\u6280\u8853\u7684\u306a\u8a71\u984c\u306b\u3064\u3044\u3066\u66f8\u3044\u3066\u3044\u304d\u307e\u3059\u3002\u5185\u5bb9\u306b\u9806\u5e8f\u306f\u306a\u304f\u3001\u30e6\u30fc\u30b6\u30fc\u304b\u3089\u5bc4\u305b\u3089\u308c\u305f\u8cea\u554f\u306a\u3069\u306b\u3082\u3068\u3065\u3044\u3066\u3001\u958b\u767a\u4e0a\u3067\u5f15\u3063\u304b\u304b\u308a\u3084\u3059\u3044\u30dd\u30a4\u30f3\u30c8\u3084\u3001Buddy\u306e\u6a19\u6e96\u7684\u306a\u6a5f\u80fd\u3067\u306f\u8db3\u3089\u306a\u3044\u90e8\u5206\u3092\u88dc\u3046\u30c6\u30af\u30cb\u30c3\u30af\u306a\u3069\u3092\u53d6\u308a\u4e0a\u3052\u307e\u3059\u3002\u3088\u308d\u3057\u304f\u304a\u9858\u3044\u3044\u305f\u3057\u307e\u3059\u3002<\/p>\n<p>\u4eca\u56de\u306f\u300c\u3010\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u306e\u7f60\u3011\u7a7a\u6587\u5b57\u5217\u3001null\u3001undefined\u300d\u3067\u3059\u3002<\/p>\n<p>\u300c\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u306e\u7f60\u300d\u3068\u306f\u3001\u8aa4\u308a\u306b\u9665\u308a\u3084\u3059\u3044\u30dd\u30a4\u30f3\u30c8\u3001\u3068\u3044\u3046\u3088\u3046\u306a\u610f\u5473\u3067\u3059\u3002Buddy\u3067\u306f\u57fa\u672c\u7684\u306bJavascript\u8a00\u8a9e\u3092\u7528\u3044\u3001\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u64cd\u4f5c\u3067\u306f\u4e00\u90e8SQL\u8a00\u8a9e\u306e\u6a5f\u80fd\u3092\u7528\u3044\u307e\u3059\u306e\u3067\u3001Javascript\u3068SQL\u3067\u306e\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u3067\u306e\u6ce8\u610f\u70b9\u3068\u3044\u3046\u3053\u3068\u3067\u3059\u306d\u3002\u53d6\u308a\u4e0a\u3052\u308b\u306e\u306f\u3001\u7a7a\u6587\u5b57\u5217\u3001null\u3001undefined\u3068\u3044\u3046\u3061\u3087\u3063\u3068\u4e0d\u601d\u8b70\u306a\u5b58\u5728\u3067\u3059\u3002<\/p>\n<p>Javascript\u3068SQL\u3067\u306f\u3061\u3087\u3063\u3068\u69d8\u5b50\u304c\u9055\u3046\u306e\u3067\u3001\u307e\u305aJavascript\u306e\u5834\u5408\u3092\u8003\u3048\u307e\u3059\u3002<\/p>\n<p>\u307e\u305a\u306f\u7a7a\u6587\u5b57\u5217\u3067\u3059\u3002Javascript\u3067\u306f\u3001&#8221;&#8221; \u3068\u304b &#8221; \u3068\u66f8\u304f\u3068\u7a7a\u6587\u5b57\u5217\u3067\u3059\u3002&#8221;abc&#8221; \u3068\u66f8\u3051\u30703\u6587\u5b57\u304b\u3089\u306a\u308b\u6587\u5b57\u5217\u3067\u3059\u306d\u3002\u3067\u3082\u6587\u5b57\u304c\u4e00\u3064\u3082\u306a\u3044\u306e\u306b\u300c\u6587\u5b57\u5217\u300d\u3068\u306f\u3053\u308c\u3044\u304b\u306b\uff1f\u65e5\u5e38\u7684\u306a\u611f\u899a\u304b\u3089\u3059\u308b\u3068\u3061\u3087\u3063\u3068\u4e0d\u601d\u8b70\u3067\u3059\u304c\u3001\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u306e\u4e16\u754c\u3067\u306f\u7a7a\u3063\u307d\uff08\u9577\u3055\u304c0\uff09\u3067\u3082\u6587\u5b57\u5217\u3068\u3057\u3066\u6271\u3046\u3053\u3068\u306b\u3059\u308b\u3068\u4fbf\u5229\u306a\u306e\u3067\u3001\u305d\u3046\u306a\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u6b21\u306bnull\u3067\u3059\u3002null\u306f\u300c\u4f55\u3082\u306a\u3044\u300d\u3068\u3044\u3046\u610f\u5473\u3067\u3001Javascript\u3067\u306f\u300c\u5024\u3092\u6301\u305f\u306a\u3044\u7279\u6b8a\u306a\u72b6\u614b\u300d\u306e\u3053\u3068\u3067\u3059\u3002\u30c9\u30a4\u30c4\u8a9e\u306eNull\u306f\u6570\u5024\u306e0\uff08\u30bc\u30ed\uff09\u306e\u610f\u5473\u3060\u3063\u305f\u308a\u3059\u308b\u306e\u3067\u3084\u3084\u3053\u3057\u3044\u3067\u3059\u304c\u30010\u3068null\u306f\u9055\u3044\u307e\u3059\u3002\u7a7a\u6587\u5b57\u5217\u3068\u3082\u9055\u3044\u307e\u3059\u3002\u7a7a\u6587\u5b57\u5217\u306f\u300c\u9577\u30550\u306e\u6587\u5b57\u5217\u3068\u3044\u3046\u5024\u300d\u3001null\u306f\u300c\u5024\u3092\u6301\u305f\u306a\u3044\u7279\u6b8a\u306a\u72b6\u614b\u300d\u3002\u3046\u30fc\u3093\u2026\u3068\u3044\u3046\u611f\u3058\u3067\u3059\u304c\u3001\u305d\u3046\u3044\u3046\u3053\u3068\u306b\u306a\u3063\u3066\u3044\u307e\u3059\u3002\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u306e\u4e2d\u3067\u306f\u30010\u3084\u7a7a\u6587\u5b57\u5217\u3068\u533a\u5225\u3057\u3066null\u304c\u3042\u308b\u3053\u3068\u306f\u7d50\u69cb\u91cd\u8981\u3067\u3059\u3002<\/p>\n<p>\u3055\u3066\u3001Javascript\u3067\u306f\u3055\u3089\u306bundefined\u3068\u3044\u3046\u30e2\u30ce\u304c\u3042\u308a\u307e\u3059\u3002\u6587\u5b57\u901a\u308a\u300c\u672a\u5b9a\u7fa9\u300d\u3067\u3059\u3002\u5909\u6570\u3092\u5b9a\u7fa9\u3057\u305f\u304c\u521d\u671f\u5024\u3092\u30bb\u30c3\u30c8\u3057\u306a\u304b\u3063\u305f\u3089\u3001\u305d\u306e\u5909\u6570\u306e\u5185\u5bb9\u306fundefined\u3067\u3059\u3002\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u5b58\u5728\u3057\u306a\u3044\u30d7\u30ed\u30d1\u30c6\u30a3\u3092\u8aad\u307f\u51fa\u3059\u3068\u3053\u308c\u3082undefined\u3067\u3059\u3002undefined\u304c\u3042\u308b\u306e\u306bnull\u304c\u5fc5\u8981\u306a\u306e\u304b\uff1f\u3069\u3046\u4f7f\u3044\u5206\u3051\u308b\u306e\u304b\uff1f\u3068\u3044\u3046\u7591\u554f\u304c\u6d6e\u304b\u3073\u307e\u3059\u304c\u3001\u3068\u306b\u304b\u304f\u305d\u3046\u306a\u3063\u3066\u3044\u307e\u3059\u3002<br \/>\n\u3061\u306a\u307f\u306b\u3001null + 0 \u306f 0 \u306b\u306a\u308a\u307e\u3059\u304c\u3001undefined + 0 \u306f NaN \u3068\u3044\u3046\u3053\u308c\u307e\u305f\u7279\u6b8a\u306a\u30e2\u30ce\u306b\u306a\u308a\u307e\u3059\u3002\u3055\u3089\u306b\u3084\u3084\u3053\u3057\u3044\u3067\u3059\u306d\u3002undefined\u306b\u3064\u3044\u3066\u306f\u3044\u308d\u3044\u308d\u3068\u7a81\u3063\u8fbc\u307f\u3069\u3053\u308d\u304c\u3042\u308b\u306e\u3067\u3059\u304c\u3001\u4eca\u56de\u306f\u30b9\u30eb\u30fc\u3057\u307e\u3059\u3002<\/p>\n<p>\u6b21\u306b\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u3092\u64cd\u4f5c\u3059\u308b\u8a00\u8a9e\u3067\u3042\u308bSQL\u3067\u306f\u3069\u3046\u306a\u3063\u3066\u3044\u308b\u304b\u3092\u898b\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n<p>\u7a7a\u6587\u5b57\u5217\u306fSQL\u306b\u3082\u3042\u308a\u307e\u3059\u3002SQL\u3067\u306f\u6587\u5b57\u5217\u306f\u30b7\u30f3\u30b0\u30eb\u30af\u30a9\u30fc\u30c6\u30fc\u30b7\u30e7\u30f3\u3067\u56f2\u3080\u306e\u3067\u3001&#8221; \u3067\u3059\u306d\u3002<\/p>\n<p>null\u3082\u3042\u308a\u307e\u3059\u3002\u3057\u304b\u3057\u3001SQL\u306b\u306fundefined\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u30c6\u30fc\u30d6\u30eb\u306e\u30ab\u30e9\u30e0\u306b\u4f55\u3082\u5024\u3092\u30bb\u30c3\u30c8\u3057\u3066\u3044\u306a\u3044\u72b6\u614b\u306f null \u3067\u3059\u3002<br \/>\n\u3061\u306a\u307f\u306b\u3001SQL\u3067\u306f null + 0 \u306f 0 \u3067\u306f\u306a\u304f null \u3067\u3059\u3002\u300c\u5024\u306e\u306a\u3044\u72b6\u614b\u300d\u306b\u5bfe\u3057\u3066\u6f14\u7b97\u3092\u884c\u3046\u3053\u3068\u306f\u3067\u304d\u305a\u7d50\u679c\u3082\u307e\u305f\u300c\u5024\u306e\u306a\u3044\u72b6\u614b\u300d\u306b\u306a\u308b\u3001\u3068\u3044\u3046\u8003\u3048\u65b9\u3067\u3059\u306d\u3002\u6bd4\u8f03\u3059\u308b\u3068\u304d\u3082\u300c\u2026 = null\u300d\u3067\u306f\u30c0\u30e1\u3067\u300c\u2026 is null\u300d\u3068\u3044\u3046\u7279\u6b8a\u306a\u66f8\u304d\u65b9\u3092\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u3046\u3063\u304b\u308a\u300c\u2026 = null\u300d\u3068\u66f8\u3044\u3066\u3082\u30a8\u30e9\u30fc\u306b\u306f\u306a\u3089\u305a\u3001\u6bd4\u8f03\u7d50\u679c\u304cnull\u306b\u306a\u3063\u3066\u3057\u307e\u3046\u3068\u3044\u3046\u3068\u3053\u308d\u304c\u7f60\u3067\u3059\u306d\u3002<\/p>\n<p>\u4ee5\u4e0a\u306fJavascript\u3068SQL\u306b\u3064\u3044\u3066\u306e\u4e00\u822c\u7684\u306a\u3053\u3068\u3067\u3057\u305f\u3002\u6b21\u306bBuddy\u3067\u306e\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u3001\u7279\u306b\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u64cd\u4f5c\u3067\u6ce8\u610f\u3059\u3079\u304d\u70b9\u3092\u66f8\u3044\u3066\u304a\u304d\u307e\u3059\u3002<\/p>\n<p>\u4f8b\u3048\u3070\u300cItem\u300d\u3068\u3044\u3046\u30c6\u30fc\u30d6\u30eb\u306b\u300cID\u300d\u300cname\u300d\u300cprice\u300d\u306e\u30ab\u30e9\u30e0\u304c\u3042\u308b\u3068\u3057\u307e\u3059\u3002ID\u3068price\u306f\u6570\u5024\u578b\u3001name\u306f\u6587\u5b57\u5217\u578b\u3067\u3059\u3002ID\u304c1\u306e\u30ec\u30b3\u30fc\u30c9\u306e\u5185\u5bb9\u3092\u66f4\u65b0\u3059\u308b\u306b\u306f\u3001\u4f8b\u3048\u3070\u6b21\u306e\u3088\u3046\u306b\u66f8\u304d\u307e\u3059\u3002<\/p>\n<div style=\"background-color: lightgrey\">\n<pre>\tthis.tables.Item.updateRecord({\n\t\twhere: {ID: 1},\n\t\tdata: {name: '\u5546\u54c1A', price: 10000}\n\t}, function(error, result) {\n\t\tif(error) return console.log(error.response.text);\n\t});\n<\/pre>\n<\/div>\n<p>\u4f55\u3082\u554f\u984c\u306f\u3042\u308a\u307e\u305b\u3093\u3002name\u306b&#8217;\u5546\u54c1A&#8217;\u3001price\u306b10000\u304c\u30bb\u30c3\u30c8\u3055\u308c\u307e\u3059\u3002<\/p>\n<p>\u3067\u306f\u3001<\/p>\n<div style=\"background-color: lightgrey\">\n<pre>\t\tdata: {price: 20000}\n<\/pre>\n<\/div>\n<p>\u3068\u3057\u305f\u3089\u3069\u3046\u306a\u308b\u3067\u3057\u3087\u3046\u304b\uff1f<br \/>\n\u7d50\u679c\u306f\u3001name\u306f\u5909\u308f\u3089\u305a\u305d\u306e\u307e\u307e\u3067\u3001price\u306b20000\u304c\u30bb\u30c3\u30c8\u3055\u308c\u307e\u3059\u3002updateRecord()\u306e\u5834\u5408\u3001data\u3067\u6307\u5b9a\u3057\u306a\u304b\u3063\u305f\u30ab\u30e9\u30e0\u306f\u66f4\u65b0\u5bfe\u8c61\u306b\u306a\u3089\u306a\u3044\u3068\u3044\u3046\u3053\u3068\u3067\u3059\u306d\u3002<\/p>\n<p>\u6b21\u306b\u3053\u3093\u306a\u3053\u3068\u3092\u3084\u3063\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n<div style=\"background-color: lightgrey\">\n<pre>\t\tdata: {name: undefined, price: 30000}\n<\/pre>\n<\/div>\n<p>\u3068\u3057\u305f\u3089\u3069\u3046\u306a\u308b\u3067\u3057\u3087\u3046\u304b\uff1f<br \/>\n\u3053\u306e\u5834\u5408\u306e\u7d50\u679c\u3082\u3001name\u306f\u5909\u308f\u3089\u305a\u305d\u306e\u307e\u307e\u3067\u3001price\u306b30000\u304c\u30bb\u30c3\u30c8\u3055\u308c\u307e\u3059\u3002undefined\u3060\u3068\u3001\u305d\u3082\u305d\u3082\u6307\u5b9a\u3057\u306a\u304b\u3063\u305f\u5834\u5408\u3068\u540c\u69d8\u306e\u52d5\u4f5c\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>null\u3092\u30bb\u30c3\u30c8\u3057\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n<div style=\"background-color: lightgrey\">\n<pre>\t\tdata: {name: null, price: null}\n<\/pre>\n<\/div>\n<p>\u3068\u3057\u305f\u3089\u3069\u3046\u306a\u308b\u3067\u3057\u3087\u3046\u304b\uff1f<br \/>\n\u7d50\u679c\u306f\u3082\u3061\u308d\u3093\u3001name\u3082price\u3082null\u306b\u306a\u308a\u307e\u3059\u3002\uff08\u300c\u3082\u3061\u308d\u3093\u300d\u3068\u66f8\u304d\u307e\u3057\u305f\u304c\u3001\u3053\u308c\u306fJavascript\u306enull\u306fSQL\u3067\u306enull\u3068\u3057\u3066\u30bb\u30c3\u30c8\u3059\u308b\u3088\u3046\u306b\u5185\u90e8\u3067\u51e6\u7406\u3055\u308c\u3066\u3044\u308b\u304b\u3089\u3067\u3059\u3002\uff09<\/p>\n<p>\u3067\u306f\u3001\u7a7a\u6587\u5b57\u5217\u3092\u30bb\u30c3\u30c8\u3057\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n<div style=\"background-color: lightgrey\">\n<pre>\t\tdata: {name: '', price: ''}\n<\/pre>\n<\/div>\n<p>\u3068\u3057\u305f\u3089\u3069\u3046\u306a\u308b\u3067\u3057\u3087\u3046\u304b\uff1f<br \/>\n\u7d50\u679c\u306f\u30a8\u30e9\u30fc\u3068\u306a\u308a\u3001\u30b3\u30f3\u30bd\u30fc\u30eb\u306b\u300cinvalid input syntax for integer: &#8220;&#8221;\u300d\u3068\u8868\u793a\u3055\u308c\u307e\u3057\u305f\u3002name\u3082price\u3082\u305d\u306e\u307e\u307e\u3067\u3059\u3002<br \/>\n\u5b9f\u306f<\/p>\n<div style=\"background-color: lightgrey\">\n<pre>\t\tdata: {name: '\u5546\u54c1A', price: '10000'}\n<\/pre>\n<\/div>\n<p>\u306e\u3088\u3046\u306bprice\u306b\u6587\u5b57\u5217\uff08\u4e2d\u5473\u306f\u6570\u5024\u3067\u3042\u308b\u3088\u3046\u306a\uff09\u3092\u4e0e\u3048\u308b\u3068\u3001\u3061\u3083\u3093\u3068name\u306b&#8217;\u5546\u54c1A&#8217;\u3001price\u306b10000\u304c\u30bb\u30c3\u30c8\u3055\u308c\u307e\u3059\u3002\u3053\u308c\u306f\u3001Buddy\u3067\u4f7f\u7528\u3057\u3066\u3044\u308bPostgreSQL\u3067\u306f\u3001\u6570\u5024\u578b\u306e\u30ab\u30e9\u30e0\u306b\u6587\u5b57\u5217\u3092\u30bb\u30c3\u30c8\u3057\u3088\u3046\u3068\u3057\u305f\u5834\u5408\u3001\u6697\u9ed9\u306e\u578b\u5909\u63db\u304c\u884c\u308f\u308c\u3066\u6570\u5024\u306b\u5909\u63db\u3067\u304d\u308c\u3070\u6210\u529f\u3057\u307e\u3059\u3002\u3057\u304b\u3057\u3001\u7a7a\u6587\u5b57\u5217\u306f\u6570\u5024\u306b\u5909\u63db\u3067\u304d\u306a\u3044\u306e\u3067\u3001\u30a8\u30e9\u30fc\u306b\u306a\u3063\u305f\u308f\u3051\u3067\u3059\u3002<\/p>\n<p>\u3055\u3066\u3001\u4e0a\u8a18\u306e\u4f8b\u3067\u306fdata\u306e\u4e2d\u306b\u5024\u3092\u76f4\u66f8\u304d\u3057\u3066\u3044\u307e\u3059\u304c\u3001\u5b9f\u969b\u306e\u30a2\u30d7\u30ea\u3067\u306fname\u3084price\u3092\u5165\u529b\u3059\u308b\u30c6\u30ad\u30b9\u30c8\u30dc\u30c3\u30af\u30b9\u304c\u3042\u3063\u3066\u3001\u305d\u306e\u5024\u3092\u53d6\u3063\u3066\u304d\u3066\u30bb\u30c3\u30c8\u3059\u308b\u3088\u3046\u306a\u5834\u5408\u304c\u591a\u3044\u3067\u3057\u3087\u3046\u3002\u4f8b\u3048\u3070\u3001\u6b21\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<div style=\"background-color: lightgrey\">\n<pre>\tvar name = this.items.nameTEXT.getValue();\n\tvar price = this.items.priceTEXT.getValue();\n\tthis.tables.Item.updateRecord({\n\t\twhere: {ID: 1},\n\t\tdata: {name: name, price: price}\n\t}, function(error, result) {\n\t\tif(error) return console.log(error.response.text);\n\t});\n<\/pre>\n<\/div>\n<p>\u30c6\u30ad\u30b9\u30c8\u30dc\u30c3\u30af\u30b9\u304b\u3089getValue()\u3067\u5f97\u3089\u308c\u308b\u306e\u306f\u6587\u5b57\u5217\u3067\u3059\u3002\u5165\u529b\u5185\u5bb9\u3092\u524a\u9664\u3057\u3066\u7a7a\u306b\u3059\u308b\u3068\u7a7a\u6587\u5b57\u5217\u306b\u306a\u308a\u307e\u3059\u3002\u305d\u308c\u304cprice\u306e\u5165\u529b\u6b04\u3067\u3042\u308c\u3070\u3001updateRecord()\u306b\u4e0e\u3048\u308b\u3068\u304d\u306b\u305d\u306e\u307e\u307e\u3067\u306f\u4e0a\u8a18\u306e\u30a8\u30e9\u30fc\u306b\u306a\u308a\u307e\u3059\u3002\u7a7a\u6587\u5b57\u5217\u306fnull\u306b\u7f6e\u304d\u63db\u3048\u3066\u4e0e\u3048\u308b\u306e\u304c\u3001\u304a\u305d\u3089\u304f\u30e6\u30fc\u30b6\u30fc\u306e\u5165\u529b\u610f\u56f3\u306b\u3082\u6cbf\u3063\u305f\u51e6\u7406\u3068\u306a\u308b\u3067\u3057\u3087\u3046\u3002\uff08\u5c06\u6765\u306eBuddy\u3067\u3001\u3053\u306e\u7f6e\u304d\u63db\u3048\u3092\u81ea\u52d5\u3067\u304a\u3053\u306a\u3046\u30aa\u30d7\u30b7\u30e7\u30f3\u6a5f\u80fd\u3092\u63d0\u4f9b\u3059\u308b\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u304c\u3001\u73fe\u6642\u70b9\u3067\u306f\u30d7\u30ed\u30b0\u30e9\u30e0\u3067\u66f8\u304f\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\uff09<br \/>\n\u307e\u305f\u3001\u30c6\u30ad\u30b9\u30c8\u30dc\u30c3\u30af\u30b9\u3092\u30af\u30ea\u30a2\u3059\u308b\u305f\u3081\u306b\u3001setValue(null) \u3084 setValue(undefined) \u3068\u3059\u308c\u3070\u3001getValue()\u3067\u5f97\u3089\u308c\u308b\u306e\u3082 null \u3084 undefined \u306b\u306a\u308a\u307e\u3059\u3002null \u3067\u3042\u308c\u3070\u610f\u56f3\u901a\u308a null \u304c\u30bb\u30c3\u30c8\u3055\u308c\u307e\u3059\u304c\u3001\u9593\u9055\u3048\u3066 undefined \u306b\u3059\u308b\u3068\u3001\u30bb\u30c3\u30c8\u3055\u308c\u305a\u306b\u5143\u306e\u5024\u306e\u307e\u307e\u306b\u306a\u3063\u3066\u3057\u307e\u3044\u307e\u3059\u3002<\/p>\n<p>\u4ee5\u4e0a\u306e\u3088\u3046\u306b\u3001\u7a7a\u6587\u5b57\u5217\u3001null\u3001undefined\u306b\u3064\u3044\u3066\u306f\u3001\u3044\u308d\u3044\u308d\u306a\u7f60\u304c\u6f5c\u3093\u3067\u3044\u307e\u3059\u3002\u6ce8\u610f\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n<p>\uff082021\/11\/22 \u4e2d\u5cf6\uff09<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4eca\u56de\u304b\u3089\u300c\u30c6\u30af\u30cb\u30ab\u30eb\u30b3\u30e9\u30e0\u300d\u3068\u3057\u3066\u3001Buddy\u3067\u306e\u30a2\u30d7\u30ea\u958b\u767a\u306b\u307e\u3064\u308f\u308b\u6280\u8853\u7684\u306a\u8a71\u984c\u306b\u3064\u3044\u3066\u66f8\u3044\u3066\u3044\u304d\u307e\u3059\u3002\u5185\u5bb9\u306b\u9806\u5e8f\u306f\u306a\u304f\u3001\u30e6\u30fc\u30b6\u30fc\u304b\u3089\u5bc4\u305b\u3089\u308c\u305f\u8cea\u554f\u306a\u3069\u306b\u3082\u3068\u3065\u3044\u3066\u3001\u958b\u767a\u4e0a\u3067\u5f15\u3063\u304b\u304b\u308a\u3084\u3059\u3044\u30dd\u30a4\u30f3\u30c8\u3084\u3001Buddy\u306e\u6a19\u6e96 [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":2396,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[16],"tags":[],"class_list":{"0":"post-2373","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","6":"hentry","7":"category-16","9":"post-with-thumbnail","10":"post-with-thumbnail-large"},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v22.2 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>21.11.22\u3000\u3010\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u306e\u7f60\u3011\u7a7a\u6587\u5b57\u5217\u3001null\u3001undefined - Buddy \u2013 React.js Node.js\u3092\u642d\u8f09\u3057\u305f\u65b0\u611f\u899a\u306eweb\u30a2\u30d7\u30ea\u958b\u767a\u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.buddy.info-lab.co.jp\/?p=2373\" \/>\n<meta property=\"og:locale\" content=\"ja_JP\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"21.11.22\u3000\u3010\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u306e\u7f60\u3011\u7a7a\u6587\u5b57\u5217\u3001null\u3001undefined - Buddy \u2013 React.js Node.js\u3092\u642d\u8f09\u3057\u305f\u65b0\u611f\u899a\u306eweb\u30a2\u30d7\u30ea\u958b\u767a\u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0\" \/>\n<meta property=\"og:description\" content=\"\u4eca\u56de\u304b\u3089\u300c\u30c6\u30af\u30cb\u30ab\u30eb\u30b3\u30e9\u30e0\u300d\u3068\u3057\u3066\u3001Buddy\u3067\u306e\u30a2\u30d7\u30ea\u958b\u767a\u306b\u307e\u3064\u308f\u308b\u6280\u8853\u7684\u306a\u8a71\u984c\u306b\u3064\u3044\u3066\u66f8\u3044\u3066\u3044\u304d\u307e\u3059\u3002\u5185\u5bb9\u306b\u9806\u5e8f\u306f\u306a\u304f\u3001\u30e6\u30fc\u30b6\u30fc\u304b\u3089\u5bc4\u305b\u3089\u308c\u305f\u8cea\u554f\u306a\u3069\u306b\u3082\u3068\u3065\u3044\u3066\u3001\u958b\u767a\u4e0a\u3067\u5f15\u3063\u304b\u304b\u308a\u3084\u3059\u3044\u30dd\u30a4\u30f3\u30c8\u3084\u3001Buddy\u306e\u6a19\u6e96 [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.buddy.info-lab.co.jp\/?p=2373\" \/>\n<meta property=\"og:site_name\" content=\"Buddy \u2013 React.js Node.js\u3092\u642d\u8f09\u3057\u305f\u65b0\u611f\u899a\u306eweb\u30a2\u30d7\u30ea\u958b\u767a\u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0\" \/>\n<meta property=\"article:published_time\" content=\"2021-11-22T02:34:06+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2021-11-26T06:54:25+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.buddy.info-lab.co.jp\/wp-content\/uploads\/2021\/11\/a11b4bb3ba448d1fa402ac3dc62cc91f.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"215\" \/>\n\t<meta property=\"og:image:height\" content=\"213\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"netstock\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u57f7\u7b46\u8005\" \/>\n\t<meta name=\"twitter:data1\" content=\"netstock\" \/>\n\t<meta name=\"twitter:label2\" content=\"\u63a8\u5b9a\u8aad\u307f\u53d6\u308a\u6642\u9593\" \/>\n\t<meta name=\"twitter:data2\" content=\"1\u5206\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.buddy.info-lab.co.jp\/?p=2373\",\"url\":\"https:\/\/www.buddy.info-lab.co.jp\/?p=2373\",\"name\":\"21.11.22\u3000\u3010\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u306e\u7f60\u3011\u7a7a\u6587\u5b57\u5217\u3001null\u3001undefined - Buddy \u2013 React.js Node.js\u3092\u642d\u8f09\u3057\u305f\u65b0\u611f\u899a\u306eweb\u30a2\u30d7\u30ea\u958b\u767a\u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0\",\"isPartOf\":{\"@id\":\"https:\/\/www.buddy.info-lab.co.jp\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/www.buddy.info-lab.co.jp\/?p=2373#primaryimage\"},\"image\":{\"@id\":\"https:\/\/www.buddy.info-lab.co.jp\/?p=2373#primaryimage\"},\"thumbnailUrl\":\"https:\/\/www.buddy.info-lab.co.jp\/wp-content\/uploads\/2021\/11\/a11b4bb3ba448d1fa402ac3dc62cc91f.jpg\",\"datePublished\":\"2021-11-22T02:34:06+00:00\",\"dateModified\":\"2021-11-26T06:54:25+00:00\",\"author\":{\"@id\":\"https:\/\/www.buddy.info-lab.co.jp\/#\/schema\/person\/d38d282aec8a5d5f06336f99a6b544d0\"},\"breadcrumb\":{\"@id\":\"https:\/\/www.buddy.info-lab.co.jp\/?p=2373#breadcrumb\"},\"inLanguage\":\"ja\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/www.buddy.info-lab.co.jp\/?p=2373\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"ja\",\"@id\":\"https:\/\/www.buddy.info-lab.co.jp\/?p=2373#primaryimage\",\"url\":\"https:\/\/www.buddy.info-lab.co.jp\/wp-content\/uploads\/2021\/11\/a11b4bb3ba448d1fa402ac3dc62cc91f.jpg\",\"contentUrl\":\"https:\/\/www.buddy.info-lab.co.jp\/wp-content\/uploads\/2021\/11\/a11b4bb3ba448d1fa402ac3dc62cc91f.jpg\",\"width\":215,\"height\":213},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/www.buddy.info-lab.co.jp\/?p=2373#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"\u30db\u30fc\u30e0\",\"item\":\"https:\/\/www.buddy.info-lab.co.jp\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"21.11.22\u3000\u3010\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u306e\u7f60\u3011\u7a7a\u6587\u5b57\u5217\u3001null\u3001undefined\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/www.buddy.info-lab.co.jp\/#website\",\"url\":\"https:\/\/www.buddy.info-lab.co.jp\/\",\"name\":\"Buddy \u2013 React.js Node.js\u3092\u642d\u8f09\u3057\u305f\u65b0\u611f\u899a\u306eweb\u30a2\u30d7\u30ea\u958b\u767a\u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0\",\"description\":\"\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/www.buddy.info-lab.co.jp\/?s={search_term_string}\"},\"query-input\":\"required name=search_term_string\"}],\"inLanguage\":\"ja\"},{\"@type\":\"Person\",\"@id\":\"https:\/\/www.buddy.info-lab.co.jp\/#\/schema\/person\/d38d282aec8a5d5f06336f99a6b544d0\",\"name\":\"netstock\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"ja\",\"@id\":\"https:\/\/www.buddy.info-lab.co.jp\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/secure.gravatar.com\/avatar\/28067e07bb5f802cde7de8acb0a489df8e5b68aff2cfaf7a0031309744128529?s=96&d=mm&r=g\",\"contentUrl\":\"https:\/\/secure.gravatar.com\/avatar\/28067e07bb5f802cde7de8acb0a489df8e5b68aff2cfaf7a0031309744128529?s=96&d=mm&r=g\",\"caption\":\"netstock\"},\"url\":\"https:\/\/www.buddy.info-lab.co.jp\/?author=2\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"21.11.22\u3000\u3010\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u306e\u7f60\u3011\u7a7a\u6587\u5b57\u5217\u3001null\u3001undefined - Buddy \u2013 React.js Node.js\u3092\u642d\u8f09\u3057\u305f\u65b0\u611f\u899a\u306eweb\u30a2\u30d7\u30ea\u958b\u767a\u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.buddy.info-lab.co.jp\/?p=2373","og_locale":"ja_JP","og_type":"article","og_title":"21.11.22\u3000\u3010\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u306e\u7f60\u3011\u7a7a\u6587\u5b57\u5217\u3001null\u3001undefined - Buddy \u2013 React.js Node.js\u3092\u642d\u8f09\u3057\u305f\u65b0\u611f\u899a\u306eweb\u30a2\u30d7\u30ea\u958b\u767a\u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0","og_description":"\u4eca\u56de\u304b\u3089\u300c\u30c6\u30af\u30cb\u30ab\u30eb\u30b3\u30e9\u30e0\u300d\u3068\u3057\u3066\u3001Buddy\u3067\u306e\u30a2\u30d7\u30ea\u958b\u767a\u306b\u307e\u3064\u308f\u308b\u6280\u8853\u7684\u306a\u8a71\u984c\u306b\u3064\u3044\u3066\u66f8\u3044\u3066\u3044\u304d\u307e\u3059\u3002\u5185\u5bb9\u306b\u9806\u5e8f\u306f\u306a\u304f\u3001\u30e6\u30fc\u30b6\u30fc\u304b\u3089\u5bc4\u305b\u3089\u308c\u305f\u8cea\u554f\u306a\u3069\u306b\u3082\u3068\u3065\u3044\u3066\u3001\u958b\u767a\u4e0a\u3067\u5f15\u3063\u304b\u304b\u308a\u3084\u3059\u3044\u30dd\u30a4\u30f3\u30c8\u3084\u3001Buddy\u306e\u6a19\u6e96 [&hellip;]","og_url":"https:\/\/www.buddy.info-lab.co.jp\/?p=2373","og_site_name":"Buddy \u2013 React.js Node.js\u3092\u642d\u8f09\u3057\u305f\u65b0\u611f\u899a\u306eweb\u30a2\u30d7\u30ea\u958b\u767a\u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0","article_published_time":"2021-11-22T02:34:06+00:00","article_modified_time":"2021-11-26T06:54:25+00:00","og_image":[{"width":215,"height":213,"url":"https:\/\/www.buddy.info-lab.co.jp\/wp-content\/uploads\/2021\/11\/a11b4bb3ba448d1fa402ac3dc62cc91f.jpg","type":"image\/jpeg"}],"author":"netstock","twitter_card":"summary_large_image","twitter_misc":{"\u57f7\u7b46\u8005":"netstock","\u63a8\u5b9a\u8aad\u307f\u53d6\u308a\u6642\u9593":"1\u5206"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/www.buddy.info-lab.co.jp\/?p=2373","url":"https:\/\/www.buddy.info-lab.co.jp\/?p=2373","name":"21.11.22\u3000\u3010\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u306e\u7f60\u3011\u7a7a\u6587\u5b57\u5217\u3001null\u3001undefined - Buddy \u2013 React.js Node.js\u3092\u642d\u8f09\u3057\u305f\u65b0\u611f\u899a\u306eweb\u30a2\u30d7\u30ea\u958b\u767a\u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0","isPartOf":{"@id":"https:\/\/www.buddy.info-lab.co.jp\/#website"},"primaryImageOfPage":{"@id":"https:\/\/www.buddy.info-lab.co.jp\/?p=2373#primaryimage"},"image":{"@id":"https:\/\/www.buddy.info-lab.co.jp\/?p=2373#primaryimage"},"thumbnailUrl":"https:\/\/www.buddy.info-lab.co.jp\/wp-content\/uploads\/2021\/11\/a11b4bb3ba448d1fa402ac3dc62cc91f.jpg","datePublished":"2021-11-22T02:34:06+00:00","dateModified":"2021-11-26T06:54:25+00:00","author":{"@id":"https:\/\/www.buddy.info-lab.co.jp\/#\/schema\/person\/d38d282aec8a5d5f06336f99a6b544d0"},"breadcrumb":{"@id":"https:\/\/www.buddy.info-lab.co.jp\/?p=2373#breadcrumb"},"inLanguage":"ja","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.buddy.info-lab.co.jp\/?p=2373"]}]},{"@type":"ImageObject","inLanguage":"ja","@id":"https:\/\/www.buddy.info-lab.co.jp\/?p=2373#primaryimage","url":"https:\/\/www.buddy.info-lab.co.jp\/wp-content\/uploads\/2021\/11\/a11b4bb3ba448d1fa402ac3dc62cc91f.jpg","contentUrl":"https:\/\/www.buddy.info-lab.co.jp\/wp-content\/uploads\/2021\/11\/a11b4bb3ba448d1fa402ac3dc62cc91f.jpg","width":215,"height":213},{"@type":"BreadcrumbList","@id":"https:\/\/www.buddy.info-lab.co.jp\/?p=2373#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"\u30db\u30fc\u30e0","item":"https:\/\/www.buddy.info-lab.co.jp\/"},{"@type":"ListItem","position":2,"name":"21.11.22\u3000\u3010\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u306e\u7f60\u3011\u7a7a\u6587\u5b57\u5217\u3001null\u3001undefined"}]},{"@type":"WebSite","@id":"https:\/\/www.buddy.info-lab.co.jp\/#website","url":"https:\/\/www.buddy.info-lab.co.jp\/","name":"Buddy \u2013 React.js Node.js\u3092\u642d\u8f09\u3057\u305f\u65b0\u611f\u899a\u306eweb\u30a2\u30d7\u30ea\u958b\u767a\u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0","description":"","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.buddy.info-lab.co.jp\/?s={search_term_string}"},"query-input":"required name=search_term_string"}],"inLanguage":"ja"},{"@type":"Person","@id":"https:\/\/www.buddy.info-lab.co.jp\/#\/schema\/person\/d38d282aec8a5d5f06336f99a6b544d0","name":"netstock","image":{"@type":"ImageObject","inLanguage":"ja","@id":"https:\/\/www.buddy.info-lab.co.jp\/#\/schema\/person\/image\/","url":"https:\/\/secure.gravatar.com\/avatar\/28067e07bb5f802cde7de8acb0a489df8e5b68aff2cfaf7a0031309744128529?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/28067e07bb5f802cde7de8acb0a489df8e5b68aff2cfaf7a0031309744128529?s=96&d=mm&r=g","caption":"netstock"},"url":"https:\/\/www.buddy.info-lab.co.jp\/?author=2"}]}},"jetpack_featured_media_url":"https:\/\/www.buddy.info-lab.co.jp\/wp-content\/uploads\/2021\/11\/a11b4bb3ba448d1fa402ac3dc62cc91f.jpg","_links":{"self":[{"href":"https:\/\/www.buddy.info-lab.co.jp\/index.php?rest_route=\/wp\/v2\/posts\/2373","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.buddy.info-lab.co.jp\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.buddy.info-lab.co.jp\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.buddy.info-lab.co.jp\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.buddy.info-lab.co.jp\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2373"}],"version-history":[{"count":1,"href":"https:\/\/www.buddy.info-lab.co.jp\/index.php?rest_route=\/wp\/v2\/posts\/2373\/revisions"}],"predecessor-version":[{"id":2374,"href":"https:\/\/www.buddy.info-lab.co.jp\/index.php?rest_route=\/wp\/v2\/posts\/2373\/revisions\/2374"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.buddy.info-lab.co.jp\/index.php?rest_route=\/wp\/v2\/media\/2396"}],"wp:attachment":[{"href":"https:\/\/www.buddy.info-lab.co.jp\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2373"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.buddy.info-lab.co.jp\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2373"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.buddy.info-lab.co.jp\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2373"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}