{"id":2682,"date":"2023-04-21T14:32:35","date_gmt":"2023-04-21T05:32:35","guid":{"rendered":"https:\/\/sirius10.net\/blog\/wordpress\/?p=2682"},"modified":"2023-04-21T14:32:36","modified_gmt":"2023-04-21T05:32:36","slug":"post-2682","status":"publish","type":"post","link":"https:\/\/sirius10.net\/blog\/wordpress\/index.php\/2023\/04\/21\/2682\/","title":{"rendered":"javascript \u3067\u6570\u5b57\u306e\u6841\u6570\u3092\u63c3\u3048\u3066\u8868\u793a\u3059\u308b"},"content":{"rendered":"\n<p>\u3000\u4f8b\u3048\u3070\u3001\u7d4c\u904e\u6642\u9593\u3092\u8868\u793a\u3057\u3088\u3046\u304b\u3068\u601d\u3063\u305f\u3068\u304d\u306b\u3001MM:SS \u3068\u3044\u3046\u3088\u3046\u306a\u8868\u793a\u304c\u898b\u3084\u3059\u3044\u3068\u601d\u3046\u306e\u3067\u3059\u304c\u3001javascript \u3067\u306f\u7c21\u5358\u306b\u3067\u304d\u306a\u3044\u3088\u3046\u3067\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code file\"><code>  let time = 248;\n  let minuets = Math.floor(time \/ 60);\n  let seconds = time % 60;\n\n  document.write(minuets + ':' + seconds);\n<\/code><\/pre>\n\n\n\n<p>\u3000\u4e0a\u306e\u3088\u3046\u306a javascript \u3067\u306f\u30014:8 \u3068\u8868\u793a\u3055\u308c\u3066\u3057\u307e\u3044\u307e\u3059\u3002\u3053\u308c\u3060\u3068\u6642\u9593\u8868\u793a\u3068\u6c17\u3065\u304b\u306a\u3044\u3068\u601d\u3044\u307e\u3059\u3002\u3084\u306f\u308a\u300104:08 \u3068\u8868\u8a18\u3057\u305f\u307b\u3046\u304c\u5206\u304b\u308a\u3084\u3059\u3044\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">padStart \u30e1\u30bd\u30c3\u30c9<\/h2>\n\n\n\n<p>\u3000EcmaScript \u306e\u4ed5\u69d8\u6539\u5b9a\u306b\u3088\u308a\u30010 \u30d1\u30c7\u30a3\u30f3\u30b0\u304c\u53ef\u80fd\u3068\u306a\u308a\u307e\u3057\u305f\u3002\u6587\u5b57\u5217\u306b\u3064\u3044\u3066\u3001padStart\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3067 0 \u30d1\u30c7\u30a3\u30f3\u30b0\u304c\u53ef\u80fd\u3067\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code file\"><code>  let id = '1234';\n\n  document.write(id.padStart(6, '0'));\n<\/code><\/pre>\n\n\n\n<p>\u3000\u4e0a\u8a18\u3067\u306f\u30016 \u6841\u3067 001234 \u306e\u3088\u3046\u306b\u8868\u8a18\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3000\u3055\u3066\u3001\u3068\u3053\u308d\u304c\u6700\u521d\u306e\u4f8b\u3092\u6642\u9593\u8868\u8a18\u3055\u305b\u3088\u3046\u3068\u3059\u308b\u3068\u3001\u30a8\u30e9\u30fc\u306b\u306a\u308a\u307e\u3059\u3002\u305d\u308c\u306f\u3001padStart \u30e1\u30bd\u30c3\u30c9\u306f\u3001\u6587\u5b57\u5217\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u30e1\u30bd\u30c3\u30c9\u3060\u304b\u3089\u3067\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u6570\u5024\u3092\u6587\u5b57\u5217\u306b\u3059\u308b<\/h2>\n\n\n\n<p>\u3000\u3064\u307e\u308a\u3001\u6570\u5024\u3092\u6587\u5b57\u5217\u306b\u5909\u63db\u3057\u306a\u3051\u308c\u3070\u306a\u308a\u307e\u305b\u3093\u3002\u6570\u5024\u3092\u6587\u5b57\u5217\u306b\u3059\u308b\u95a2\u6570\u3068\u304b\u3082\u3042\u308b\u3088\u3046\u3067\u3059\u304c\u3001\u79c1\u304c\u3088\u304f\u4f7f\u3046\u306e\u306f\u7a7a\u306e\u6587\u5b57\u5217\u306b\u9023\u7d50\u3059\u308b\u65b9\u6cd5\u3067\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code file\"><code>  let time = 248;\n  let minuets = Math.floor(time \/ 60);\n  let seconds = time % 60;\n\n  document.write((''+minuets).padStart(2,'0') + ':' + (''+seconds).padStart(2,'0'));<\/code><\/pre>\n\n\n\n<p>\u3000\u3053\u306e\u3084\u308a\u65b9\u3067\u3042\u308c\u3070\u300104:08 \u3068\u8868\u793a\u3055\u308c\u308b\u3067\u3057\u3087\u3046\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u3000\u4f8b\u3048\u3070\u3001\u7d4c\u904e\u6642\u9593\u3092\u8868\u793a\u3057\u3088\u3046\u304b\u3068\u601d\u3063\u305f\u3068\u304d\u306b\u3001MM:SS \u3068\u3044\u3046\u3088\u3046\u306a\u8868\u793a\u304c\u898b\u3084\u3059\u3044\u3068\u601d\u3046\u306e\u3067\u3059\u304c\u3001javascript \u3067\u306f\u7c21\u5358\u306b\u3067\u304d\u306a\u3044\u3088\u3046\u3067\u3059\u3002 \u3000\u4e0a\u306e\u3088\u3046\u306a javascript \u3067\u306f\u30014:8 \u3068\u8868\u793a\u3055\u308c\u3066\u3057\u307e [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[19],"tags":[],"class_list":["post-2682","post","type-post","status-publish","format-standard","hentry","category-web"],"_links":{"self":[{"href":"https:\/\/sirius10.net\/blog\/wordpress\/index.php\/wp-json\/wp\/v2\/posts\/2682","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/sirius10.net\/blog\/wordpress\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/sirius10.net\/blog\/wordpress\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/sirius10.net\/blog\/wordpress\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/sirius10.net\/blog\/wordpress\/index.php\/wp-json\/wp\/v2\/comments?post=2682"}],"version-history":[{"count":2,"href":"https:\/\/sirius10.net\/blog\/wordpress\/index.php\/wp-json\/wp\/v2\/posts\/2682\/revisions"}],"predecessor-version":[{"id":2699,"href":"https:\/\/sirius10.net\/blog\/wordpress\/index.php\/wp-json\/wp\/v2\/posts\/2682\/revisions\/2699"}],"wp:attachment":[{"href":"https:\/\/sirius10.net\/blog\/wordpress\/index.php\/wp-json\/wp\/v2\/media?parent=2682"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/sirius10.net\/blog\/wordpress\/index.php\/wp-json\/wp\/v2\/categories?post=2682"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/sirius10.net\/blog\/wordpress\/index.php\/wp-json\/wp\/v2\/tags?post=2682"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}