{"id":5214,"date":"2013-03-19T21:34:01","date_gmt":"2013-03-19T12:34:01","guid":{"rendered":"http:\/\/rentan.org\/blog\/?p=5214"},"modified":"2013-03-19T21:34:01","modified_gmt":"2013-03-19T12:34:01","slug":"dmonkey-number-tofixed-toprecision","status":"publish","type":"post","link":"https:\/\/rentan.org\/blog\/2013\/03\/19\/dmonkey-number-tofixed-toprecision\/","title":{"rendered":"DMonkey: number.toFixed() \/ number.toPrecision()"},"content":{"rendered":"<p><code>number.toFixed ([digits])<\/code><\/p>\n<ul>\n<li><a href=\"http:\/\/msdn.microsoft.com\/ja-jp\/library\/ie\/sstyff0z(v=vs.94).aspx\">toFixed \u30e1\u30bd\u30c3\u30c9 (JavaScript)<\/a> | MSDN<\/li>\n<li><a href=\"https:\/\/developer.mozilla.org\/ja\/docs\/JavaScript\/Reference\/Global_Objects\/Number\/toFixed\">toFixed - JavaScript | MDN<\/a><\/li>\n<\/ul>\n<p>Number \u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u30e1\u30bd\u30c3\u30c9\u3002<br \/>\n\u6570\u309210\u9032\u56fa\u5b9a\u5c0f\u6570\u70b9\u8868\u8a18\u306e\u6587\u5b57\u5217\u306b\u5909\u63db\u3057\u307e\u3059\u3002<\/p>\n<p>digits \u306f\u5c0f\u6570\u90e8\u5206\u306e\u6841\u6570\u3092 0\uff5e18 \u3067\u6307\u5b9a\u3057\u307e\u3059(\u7701\u7565\u6642\u306f 0)\u3002\u8ca0\u6570\u3092\u6307\u5b9a\u3059\u308b\u3068\u6574\u6570\u90e8\u5206\u3092\u4e38\u3081\u3001\u5c0f\u6570\u90e8\u5206\u306f18\u6841\u306e '0' \u3067\u57cb\u3081\u3089\u308c\u307e\u3059\u3002<\/p>\n<p>\u4e38\u3081\u306e\u65b9\u6cd5\u306f\u56db\u6368\u4e94\u5165\u3067\u3001\u8ca0\u6570\u306f\u7d76\u5bfe\u5024\u3068\u3057\u3066\u4e38\u3081\u307e\u3059(round half away from zero)\u3002<\/p>\n<p>\u6570\u304c 1e15 \u4ee5\u4e0a\u306e\u5834\u5408\u306f\u3001digits \u306e\u6307\u5b9a\u306b\u304b\u304b\u308f\u3089\u305a .toString() \u306e\u7d50\u679c\u3068\u540c\u3058\u6587\u5b57\u5217\u304c\u8fd4\u3055\u308c\u307e\u3059(\u591a\u5206)\u3002<\/p>\n<p>\u306a\u304a\u3001<code>alert (-1.25.toFixed (1));<\/code> \u3067 0 \u3068\u8868\u793a\u3055\u308c\u308b\u306e\u306f\u3001number.toFixed \u306e\u52d5\u4f5c\u3067\u306f\u306a\u304f\u3001<\/p>\n<pre>\r\n-1.25.toFixed (1)\r\n= -(1.25.toFixed (1))\r\n= -('1.3')\r\n= -'1.3'\r\n<\/pre>\n<p>\u3068\u306a\u308a\u3001<code>-'1.3'<\/code> \u306f 0 \u306b\u306a\u308b\u3068\u3044\u3046 DMonkey \u306e\u578b\u5909\u63db\u306e\u6319\u52d5\u306e\u5f71\u97ff\u3067\u3059(parseInt \u3068\u540c\u3058\u611f\u3058)\u3002<\/p>\n<p><code>number.toPrecision ([digits])<\/code><\/p>\n<p>JavaScript \u306e number.toPrecision() \u306f\u3001\u6709\u52b9\u6570\u5b57\u3092 digits \u3067\u6307\u5b9a\u3057\u305f\u6841\u6570\u306b\u5909\u66f4\u3057\u3066\u6587\u5b57\u5217\u5316\u3059\u308b\u30e1\u30bd\u30c3\u30c9\u3067\u3059\u304c\u3001DMonkey \u306b\u304a\u3044\u3066\u306f\u305d\u308c\u3068\u306f\u7570\u306a\u308a .toFixed() \u3068\u540c\u3058\u52d5\u4f5c\u3068\u3057\u3066\u5b9f\u88c5\u3055\u308c\u3066\u3044\u308b\u3088\u3046\u3067\u3059\u3002\u6df7\u4e71\u9632\u6b62\u306e\u305f\u3081\u3001DMonkey \u306b\u304a\u3044\u3066\u306f .toPrecision() \u306f\u4e00\u5207\u4f7f\u308f\u306a\u3044\u65b9\u304c\u3088\u3044\u3067\u3057\u3087\u3046\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>number.toFixed ([digits]) toFixed \u30e1\u30bd\u30c3\u30c9 (JavaScript) | MSDN toFixed - JavaScript | MDN Number \u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u30e1\u30bd\u30c3\u30c9\u3002 \u6570\u309210 [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[640],"tags":[1191],"class_list":["post-5214","post","type-post","status-publish","format-standard","hentry","category-irvine","tag-dmonkey"],"_links":{"self":[{"href":"https:\/\/rentan.org\/blog\/wp-json\/wp\/v2\/posts\/5214","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/rentan.org\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/rentan.org\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/rentan.org\/blog\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/rentan.org\/blog\/wp-json\/wp\/v2\/comments?post=5214"}],"version-history":[{"count":2,"href":"https:\/\/rentan.org\/blog\/wp-json\/wp\/v2\/posts\/5214\/revisions"}],"predecessor-version":[{"id":5216,"href":"https:\/\/rentan.org\/blog\/wp-json\/wp\/v2\/posts\/5214\/revisions\/5216"}],"wp:attachment":[{"href":"https:\/\/rentan.org\/blog\/wp-json\/wp\/v2\/media?parent=5214"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/rentan.org\/blog\/wp-json\/wp\/v2\/categories?post=5214"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/rentan.org\/blog\/wp-json\/wp\/v2\/tags?post=5214"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}