{"id":549,"date":"2021-08-24T09:58:33","date_gmt":"2021-08-24T01:58:33","guid":{"rendered":"http:\/\/zhuxinyong.com\/?p=549"},"modified":"2021-09-11T06:48:46","modified_gmt":"2021-09-10T22:48:46","slug":"%e4%bd%a0%e4%b8%8d%e7%9f%a5%e9%81%93%e7%9a%84%e8%a1%a50%e6%96%b9%e6%b3%95","status":"publish","type":"post","link":"https:\/\/zhuxinyong.com\/?p=549","title":{"rendered":"\u4f60\u4e0d\u77e5\u9053\u7684\u88650\u65b9\u6cd5"},"content":{"rendered":"\n<p>\u5728\u4e1a\u52a1\u4e2d\u6709\u65f6\u5019\u4f1a\u9047\u5230\u65f6\u95f4\u5012\u8ba1\u65f6\uff0c\u7279\u522b\u662f\u7535\u5546\u7c7b\u4e1a\u52a1\u4e2d\u7684\u79d2\u6740\u3001\u62a2\u8d2d\u3001\u9884\u7ea6\u7b49\u573a\u666f\uff0c\u6240\u4ee5\u5c31\u8bbe\u8ba1\u65f6\u95f4\u4e0d\u8db3\u4e24\u4f4d\uff0c\u524d\u9762\u88650\u7684\u64cd\u4f5c\u3002<\/p>\n\n\n\n<p><br>\u6bd4\u5982 2020-3-9 \u53d8\u6210 2020-03-09\u3002<\/p>\n\n\n\n<p><br>\u5927\u591a\u6570\u5f00\u53d1\u670b\u53cb\u4f1a\u4f7f\u7528\u5982\u4e0b\u65b9\u6cd5\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">function padLeftZero(n){\n    return n &lt; 10 ? '0' + n : n\n}<\/pre>\n\n\n\n<p>\u6216\u8005<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">function padLeftZero(n){\n    return (n &lt; 10 ? '0' : '') + i\n}<\/pre>\n\n\n\n<p>\u5176\u5b9e\u4e0a\u9762\u4e24\u4e2a\u65b9\u6cd5\u90fd\u662f\u4e00\u6837\u7684\u3002<\/p>\n\n\n\n<p><br>\u63a5\u4e0b\u6765\u518d\u4ecb\u7ecd\u51e0\u4e2a\u522b\u7684\u65b9\u6cd5\uff1a<br><\/p>\n\n\n\n<p><strong>slice \u65b9\u6cd5<\/strong><\/p>\n\n\n\n<p>\u8bed\u6cd5\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">slice(beginIndex)\nslice(beginIndex, endIndex)<\/pre>\n\n\n\n<p>beginIndex \u4e3a\u8d1f\u6570\u65f6\uff0c\u53d6\u503c\u6539\u4e3a str.length + beginIndex\uff0c\u4f8b\u5982\uff1abeginIndex = -2\uff0cstr = &#8216;010&#8217; \uff0c\u6700\u540e &#8216;010&#8217;.slice(3-2) \u7ed3\u679c\u4e3a &#8217;10&#8217;\uff0c\u6b64\u65f6\u82e5 str=&#8217;03&#8217;\uff0c&#8217;03&#8217;.slice(0) \u7ed3\u679c\u4e3a &#8217;03&#8217;\u3002<\/p>\n\n\n\n<p>\u5e94\u7528\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">function padLeftZero(n){\n    return ('0' + n).slice(-2)\n}<\/pre>\n\n\n\n<p><strong>padStart \u65b9\u6cd5<\/strong><\/p>\n\n\n\n<p>\u8bed\u6cd5\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">padStart(targetLength)\npadStart(targetLength, padString)<\/pre>\n\n\n\n<p>\u5c31\u662f\u5728\u524d\u9762\u8865\u8db3padString\uff0c\u76f4\u5230\u6ee1\u8db3targetLength\u7684\u957f\u5ea6\u3002\u4f8b\u5982<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">(3+'').padStart(2,'0') \/\/ \u4e5f\u5c31\u662f '3'.padStart(2,'0') , \u76ee\u6807\u957f\u5ea6\u662f2\u5219\u9700\u8981\u5728\u524d\u9762\u88650\u6765\u4f7f\u957f\u5ea6\u6ee1\u8db3\uff0c\u7ed3\u679c\u4e3a '03'\u3002<\/pre>\n\n\n\n<p>\u5e94\u7528\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">function padLeftZero(n){\n    return (n + '').padStart(2,'0')\n}<\/pre>\n\n\n\n<p>\u5176\u4ed6\u4e00\u4e9b\u65b9\u6cd5\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">new Date().toISOString().slice(0,10) \/\/ \"2021-08-20\"\n\nnew Date().toLocaleDateString(\"default\", {year: \"numeric\", month: \"2-digit\", day: \"2-digit\"}) \/\/ \"2021\/08\/21\"<\/pre>\n","protected":false},"excerpt":{"rendered":"<p>\u5728\u4e1a\u52a1\u4e2d\u6709\u65f6\u5019\u4f1a\u9047\u5230\u65f6\u95f4\u5012\u8ba1\u65f6\uff0c\u7279\u522b\u662f\u7535\u5546\u7c7b\u4e1a\u52a1\u4e2d\u7684\u79d2\u6740\u3001\u62a2\u8d2d\u3001\u9884\u7ea6\u7b49\u573a\u666f\uff0c\u6240\u4ee5\u5c31\u8bbe\u8ba1\u65f6\u95f4\u4e0d\u8db3\u4e24\u4f4d\uff0c&#46;&#46;&#46;<\/p>\n","protected":false},"author":1,"featured_media":574,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[20,3],"tags":[6],"class_list":["post-549","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-frontend","category-tech","tag-javascript"],"_links":{"self":[{"href":"https:\/\/zhuxinyong.com\/index.php?rest_route=\/wp\/v2\/posts\/549","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/zhuxinyong.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/zhuxinyong.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/zhuxinyong.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/zhuxinyong.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=549"}],"version-history":[{"count":1,"href":"https:\/\/zhuxinyong.com\/index.php?rest_route=\/wp\/v2\/posts\/549\/revisions"}],"predecessor-version":[{"id":550,"href":"https:\/\/zhuxinyong.com\/index.php?rest_route=\/wp\/v2\/posts\/549\/revisions\/550"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/zhuxinyong.com\/index.php?rest_route=\/wp\/v2\/media\/574"}],"wp:attachment":[{"href":"https:\/\/zhuxinyong.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=549"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/zhuxinyong.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=549"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/zhuxinyong.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=549"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}