{"id":1228,"date":"2023-02-14T10:41:04","date_gmt":"2023-02-14T01:41:04","guid":{"rendered":"http:\/\/attacktube.com\/?p=1228"},"modified":"2023-02-14T13:57:27","modified_gmt":"2023-02-14T04:57:27","slug":"%e3%80%90javascript%e3%80%91math-max%e3%81%a8math-min%e3%81%a8filter%e3%83%a1%e3%82%bd%e3%83%83%e3%83%89","status":"publish","type":"post","link":"http:\/\/attacktube.com\/?p=1228","title":{"rendered":"\u3010JavaScript\u3011Math.max\u3068Math.min\u3068filter\u30e1\u30bd\u30c3\u30c9"},"content":{"rendered":"\n<p>\u914d\u5217\u306e\u4e2d\u306e\u6700\u5927\u5024\u3068\u6700\u5c0f\u5024\u3092Math.max\u3068Math.min\u3067\u6c42\u3081\u3088\u3046\u3068\u3057\u305f\u3068\u3053\u308d\u3001\u914d\u5217\u306e\u5024\u306bundefined\u304c\u542b\u307e\u308c\u3066\u3044\u308b\u3068NaN\u304c\u8fd4\u3063\u3066\u304f\u308b\u3053\u3068\u306b\u6ce8\u610f\u3059\u308b\u3002<br>\u3053\u306e\u305f\u3081\u3001filter(Boolean)\u3042\u308b\u3044\u306ffilter(value =&gt; value)\u3092\u4f7f\u3063\u3066falsy\u306a\u5024(false \u3068\u307f\u306a\u3055\u308c\u308b\u5024)\u3092\u5168\u3066\u524a\u9664\u3057\u305f\u5f8c\u306bMath.max\u3068Math.min\u3092\u4f7f\u3046\u3053\u3068\u3002<br>falsy\u306a\u5024\u306f\u6b21\u306e\u901a\u308a\u3067\u3042\u308b\u3002<br>null<br>undefided<br>\u7a7a\u6587\u5b57<br>\u6570\u5024\u306e0<br>NaN<br><br>\u7a7a\u306e\u914d\u5217\u306b\u5bfe\u3057\u3066Math.max\u3092\u4f7f\u3046\u3068-Infinity\u304c\u8fd4\u308b\u3053\u3068\u306b\u6ce8\u610f\u3059\u308b\u3002<br>\u7a7a\u306e\u914d\u5217\u306b\u5bfe\u3057\u3066Math.min\u3092\u4f7f\u3046\u3068Infinity\u304c\u8fd4\u308b\u3053\u3068\u306b\u6ce8\u610f\u3059\u308b\u3002<\/p>\n\n\n\n<!--more-->\n\n\n\n<br>\n<script async=\"\" src=\"https:\/\/pagead2.googlesyndication.com\/pagead\/js\/adsbygoogle.js?client=ca-pub-3461056110605997\" crossorigin=\"anonymous\"><\/script>\n<ins class=\"adsbygoogle\" style=\"display:block; text-align:center;\" data-ad-layout=\"in-article\" data-ad-format=\"fluid\" data-ad-client=\"ca-pub-3461056110605997\" data-ad-slot=\"3137443461\"><\/ins>\n<script>\n     (adsbygoogle = window.adsbygoogle || []).push({});\n<\/script>\n<br>\n\n\n\n<pre><code>\n\nconsole.log(\"Math.max(...[]) = \" + Math.max(...[]));\nconsole.log(\"Math.min(...[]) = \" + Math.min(...[]));\n\nlet test = [];\n\ntest[0]=80;\ntest[2]=4;\ntest[5]=48;\ntest[7]=0;\n\nconsole.log(\"test = \"+test);\n\nconsole.log(\"Math.max(...test) = \" + Math.max(...test));\nconsole.log(\"Math.min(...test) = \" + Math.min(...test));\n\nconsole.log(\"test.filter(Boolean) = \" + test.filter(Boolean));\nconsole.log(\"test.filter(value =&gt; value) = \" + test.filter(value =&gt; value));\n\nconsole.log(\"Math.max(...test.filter(Boolean)) =\" + Math.max(...test.filter(Boolean)));\nconsole.log(\"Math.min(...test.filter(Boolean)) = \" + Math.min(...test.filter(Boolean)));\n\n\/*\n\nMath.max(...[]) = -Infinity\nMath.min(...[]) = Infinity\ntest = 80,,4,,,48,,0\nMath.max(...test) = NaN\nMath.min(...test) = NaN\ntest.filter(Boolean) = 80,4,48\ntest.filter(value =&gt; value) = 80,4,48\nMath.max(...test.filter(Boolean)) =80\nMath.min(...test.filter(Boolean)) = 4\n\n*\/\n\n<\/code><\/pre>\n\n\n\n<script type=\"text\/javascript\">\njQuery(function($){\n$(\".jp-video\").hide();\n});\n<\/script>\n","protected":false},"excerpt":{"rendered":"<p>\u914d\u5217\u306e\u4e2d\u306e\u6700\u5927\u5024\u3068\u6700\u5c0f\u5024\u3092Math.max\u3068Math.min\u3067\u6c42\u3081\u3088\u3046\u3068\u3057\u305f\u3068\u3053\u308d\u3001\u914d\u5217\u306e\u5024\u306bundefined\u304c\u542b\u307e\u308c\u3066\u3044\u308b\u3068NaN\u304c\u8fd4\u3063\u3066\u304f\u308b\u3053\u3068\u306b\u6ce8\u610f\u3059\u308b\u3002\u3053\u306e\u305f\u3081\u3001filter(Boolean)\u3042\u308b\u3044\u306ffilte [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[3],"tags":[],"class_list":["post-1228","post","type-post","status-publish","format-standard","hentry","category-javascript"],"jetpack_featured_media_url":"","jetpack-related-posts":[],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"http:\/\/attacktube.com\/index.php?rest_route=\/wp\/v2\/posts\/1228","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/attacktube.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/attacktube.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/attacktube.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/attacktube.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1228"}],"version-history":[{"count":3,"href":"http:\/\/attacktube.com\/index.php?rest_route=\/wp\/v2\/posts\/1228\/revisions"}],"predecessor-version":[{"id":1234,"href":"http:\/\/attacktube.com\/index.php?rest_route=\/wp\/v2\/posts\/1228\/revisions\/1234"}],"wp:attachment":[{"href":"http:\/\/attacktube.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1228"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/attacktube.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1228"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/attacktube.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1228"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}