GAS\u3067\u7528\u610f\u3055\u308c\u3066\u3044\u308bNumber\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306f\u6570\u5024\u3092\u6271\u3046\u305f\u3081\u306e\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3067\u3001\u6570\u5024\u306e\u6574\u5f62\u6a5f\u80fd\u3084\u6700\u5927\u5024\u30fb\u6700\u5c0f\u5024\u306e\u3088\u3046\u306a\u5024\u3092\u8868\u3059\u305f\u3081\u306e\u5404\u7a2e\u30e1\u30bd\u30c3\u30c9\u304c\u7528\u610f\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n
\u6570\u5024\u578b\u3092\u6587\u5b57\u5217\u306b\u5909\u63db\u3059\u308b\u30e1\u30bd\u30c3\u30c9\u3067\u3059\u3002<\/p>\n
\r\nconst a = 333.333333;\r\nconsole.log(a.toString());\r\n# \u51fa\u529b\u7d50\u679c\r\n# 123.45\r\n \r\n<\/pre>\n<\/p>\n
\u6587\u5b57\u2192\u6570\u5024\u5909\u63db\uff08parseInt\u30e1\u30bd\u30c3\u30c9\u30fbparseFloat\u30e1\u30bd\u30c3\u30c9\uff09<\/h2>\n
\u6587\u5b57\u5217\u3092\u6570\u5024\u306b\u5909\u63db\u3059\u308b\u30e1\u30bd\u30c3\u30c9\u3067\u3059\u3002\u6574\u6570\u3078\u306e\u5909\u63db\u3001\u5c0f\u6570\u5024\u3078\u306e\u5909\u63db\u306e\u4e21\u65b9\u304c\u7528\u610f\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u3082\u3058\u6570\u5024\u5909\u63db\u3067\u304d\u306a\u3044\u5834\u5408\u306fNaN\u3092\u8fd4\u3057\u307e\u3059\u3002<\/p>\n
\r\nconst a = '123.45';\r\nconst b = 'test';\r\nconsole.log(Number.parseInt(a));\r\nconsole.log(Number.parseFloat(a));\r\nconsole.log(Number.parseFloat(b));\r\n# \u51fa\u529b\u7d50\u679c\r\n# 123\r\n# 123.45\r\n# NaN\r\n \r\n<\/pre>\n<\/p>\n
\u6307\u6570\u8868\u8a18\uff08toExponential\u30e1\u30bd\u30c3\u30c9\uff09<\/h2>\n
\u6307\u6570\u8868\u8a18\u3057\u3066\u304f\u308c\u308b\u30e1\u30bd\u30c3\u30c9\u3067\u3059\u3002\u5f15\u6570\u3067\u5c0f\u6570\u70b9\u4ee5\u4e0b\u306e\u6841\u6570\u3092\u6307\u5b9a\u3067\u304d\u307e\u3059\u3002\u8fd4\u3063\u3066\u304f\u308b\u5024\u306f\u6587\u5b57\u5217\u306a\u306e\u3067\u6ce8\u610f\u3002<\/p>\n
\r\nconst a = 666.66666666;\r\nconsole.log(a.toExponential(2));\r\n# \u51fa\u529b\u7d50\u679c\r\n# 6.67e+2\r\n \r\n<\/pre>\n<\/p>\n
\u5c0f\u6570\u70b9\u6841\u6570\u6307\u5b9a\uff08toFixed\u30e1\u30bd\u30c3\u30c9\uff09<\/h2>\n
\u5c0f\u6570\u70b9\u7b2c\u4f55\u4f4d\u304b\u3092\u6307\u5b9a\u3057\u305f\u4e0a\u3067\u305d\u306e\u6841\u6570\u307e\u3067\u56db\u6368\u4e94\u5165\u3067\u8868\u8a18\u3057\u3066\u304f\u308c\u307e\u3059\u3002\u8fd4\u3063\u3066\u304f\u308b\u5024\u306f\u6587\u5b57\u5217\u306a\u306e\u3067\u6ce8\u610f\u3002<\/p>\n
\r\nconst a = 666.66666666;\r\nconsole.log(a.toFixed(2));\r\n# \u51fa\u529b\u7d50\u679c\r\n# 666.67\r\n \r\n<\/pre>\n<\/p>\n
\u982d\u304b\u3089\u306e\u6841\u6570\u6307\u5b9a\uff08toPrecision\u30e1\u30bd\u30c3\u30c9\uff09<\/h2>\n
\u6574\u6570\u90e8\u542b\u3081\u305f\u982d\u304b\u3089\u306e\u6841\u6570\u3092\u6307\u5b9a\u3067\u304d\u308b\u30e1\u30bd\u30c3\u30c9\u3067\u3059\u3002\u8fd4\u3063\u3066\u304f\u308b\u5024\u306f\u6587\u5b57\u5217\u306a\u306e\u3067\u6ce8\u610f\u3002<\/p>\n
\r\nconst a = 666.66666666;\r\nconsole.log(a.toPrecision(4));\r\n# \u51fa\u529b\u7d50\u679c\r\n# 666.7\r\n \r\n<\/pre>\n<\/p>\n
\u6570\u5024\u5224\u5b9a\uff08isFinite\u30e1\u30bd\u30c3\u30c9\uff09<\/h2>\n
\u5024\u304c\u6570\u5024\u304b\u3069\u3046\u304b\u3092\u5224\u5b9a\u3057\u3066\u304f\u308c\u308b\u30e1\u30bd\u30c3\u30c9\u3067\u3059\u3002\u4e00\u898b\u6570\u5024\u306b\u898b\u3048\u3066\u3082\u6587\u5b57\u5217\u578b\u3067\u3042\u308c\u3070false\u3092\u8fd4\u3057\u307e\u3059\u3002<\/p>\n
\r\nconst a = 666.66666666;\r\nconst b = 666;\r\nconst c = null;\r\nconst d = '123.45';\r\nconsole.log(Number.isFinite(a));\r\nconsole.log(Number.isFinite(b));\r\nconsole.log(Number.isFinite(c));\r\nconsole.log(Number.isFinite(d));\r\n# \u51fa\u529b\u7d50\u679c\r\n# true\r\n# true\r\n# false\r\n# false\r\n \r\n<\/pre>\n<\/p>\n
\u6574\u6570\u5024\u5224\u5b9a\uff08isInteger\u30e1\u30bd\u30c3\u30c9\uff09<\/h2>\n
\u6574\u6570\u304b\u3069\u3046\u304b\u3092\u5224\u5b9a\u3059\u308b\u30e1\u30bd\u30c3\u30c9\u3067\u3059\u3002\u5c0f\u6570\u306e\u5834\u5408\u306ffalse\u3092\u8fd4\u3057\u307e\u3059\u3002<\/p>\n
\r\nconst a = 666.66666666;\r\nconst b = 666;\r\nconst c = null;\r\nconst d = '123.45';\r\nconsole.log(Number.isInteger(a));\r\nconsole.log(Number.isInteger(b));\r\nconsole.log(Number.isInteger(c));\r\nconsole.log(Number.isInteger(d));\r\n# \u51fa\u529b\u7d50\u679c\r\n# false\r\n# true\r\n# false\r\n# false\r\n \r\n<\/pre>\n<\/p>\n
NaN\u5224\u5b9a\uff08isNaN\u30e1\u30bd\u30c3\u30c9\uff09<\/h2>\n
\u5024\u304cNaN\u304b\u3069\u3046\u304b\u3092\u5224\u5b9a\u3059\u308b\u30e1\u30bd\u30c3\u30c9\u3067\u3059\u3002null\u306ffalse\u306a\u306e\u3067\u6ce8\u610f\u3002\u4f7f\u7528\u4f8b\u3068\u3057\u3066\u4f8b\u3048\u3070\u6587\u5b57\u5217\u304b\u3089\u6570\u5024\u5909\u63db\u53ef\u5426\u304b\u3092\u5224\u65ad\u3059\u308b\u5834\u5408\u306a\u3069\u3002<\/p>\n
\r\nconst aa = 'test';\r\nconst bb = null;\r\nconst cc = NaN;\r\nconst dd = Number.parseFloat(aa)\r\nconsole.log(Number.isNaN(aa));\r\nconsole.log(Number.isNaN(bb));\r\nconsole.log(Number.isNaN(cc));\r\nconsole.log(Number.isNaN(dd));\r\n# \u51fa\u529b\u7d50\u679c\r\n# false\r\n# false\r\n# true\r\n# true\r\n \r\n<\/pre>\n<\/p>\n
\u8868\u73fe\u53ef\u80fd\u306a\u6700\u5927\u5024\u30fb\u6700\u5c0f\u5024\u3092\u5f97\u308b\uff08MAX_VALUE\u30fbMIN_VALUE\uff09<\/h2>\n
\u6271\u3048\u308b\u6574\u6570\u5024\u306e\u4e0a\u9650\u5024\u3068\u4e0b\u9650\u5024\u3092\u8fd4\u3057\u3066\u304f\u308c\u308b\u30d7\u30ed\u30d1\u30c6\u30a3\u3067\u3059\u3002<\/p>\n
\r\nconsole.log(Number.MAX_VALUE);\r\nconsole.log(Number.MIN_VALUE);\r\n# \u51fa\u529b\u7d50\u679c\r\n# 1.7976931348623157e+308\r\n# 5e-324\r\n \r\n<\/pre>\n<\/p>\n","protected":false},"excerpt":{"rendered":"
GAS\u3067\u7528\u610f\u3055\u308c\u3066\u3044\u308bNumber\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306f\u6570\u5024\u3092\u6271\u3046\u305f\u3081\u306e\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3067\u3001 … <\/p>\n","protected":false},"author":1,"featured_media":10886,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[18],"tags":[],"class_list":["post-10880","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-google-apps-script"],"aioseo_notices":[],"_links":{"self":[{"href":"http:\/\/pineplanter.moo.jp\/non-it-salaryman\/wp-json\/wp\/v2\/posts\/10880","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/pineplanter.moo.jp\/non-it-salaryman\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/pineplanter.moo.jp\/non-it-salaryman\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/pineplanter.moo.jp\/non-it-salaryman\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/pineplanter.moo.jp\/non-it-salaryman\/wp-json\/wp\/v2\/comments?post=10880"}],"version-history":[{"count":5,"href":"http:\/\/pineplanter.moo.jp\/non-it-salaryman\/wp-json\/wp\/v2\/posts\/10880\/revisions"}],"predecessor-version":[{"id":10885,"href":"http:\/\/pineplanter.moo.jp\/non-it-salaryman\/wp-json\/wp\/v2\/posts\/10880\/revisions\/10885"}],"wp:featuredmedia":[{"embeddable":true,"href":"http:\/\/pineplanter.moo.jp\/non-it-salaryman\/wp-json\/wp\/v2\/media\/10886"}],"wp:attachment":[{"href":"http:\/\/pineplanter.moo.jp\/non-it-salaryman\/wp-json\/wp\/v2\/media?parent=10880"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/pineplanter.moo.jp\/non-it-salaryman\/wp-json\/wp\/v2\/categories?post=10880"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/pineplanter.moo.jp\/non-it-salaryman\/wp-json\/wp\/v2\/tags?post=10880"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}