{"id":1541,"date":"2020-09-28T16:07:46","date_gmt":"2020-09-28T08:07:46","guid":{"rendered":"https:\/\/www.yusian.com\/blog\/?p=1541"},"modified":"2020-10-31T16:09:08","modified_gmt":"2020-10-31T08:09:08","slug":"javascript%e6%97%a5%e6%9c%9f%e6%a0%bc%e5%bc%8f%e5%8c%96%e7%9a%84%e7%ae%80%e5%8d%95%e5%ae%9e%e7%8e%b0","status":"publish","type":"post","link":"https:\/\/www.yusian.com\/blog\/javascript\/2020\/09\/28\/1607461541.html","title":{"rendered":"Javascript\u65e5\u671f\u683c\u5f0f\u5316\u7684\u7b80\u5355\u5b9e\u73b0"},"content":{"rendered":"<h2>\u7b80\u8981\u8bf4\u660e<\/h2>\n<ul>\n<li>\u9996\u5148\u8fd9\u662f\u4e00\u4e2a\u6700\u7b80\u5355\u7684\u5b9e\u73b0\uff0c\u5e76\u4e0d\u4e25\u8c28\uff0c\u4f46\u80fd\u8bf4\u660e\u95ee\u9898\uff0c\u5c06\u65e5\u671f\u683c\u5f0f\u5316\u7684\u6838\u5fc3\u601d\u60f3\u4f53\u73b0\u51fa\u6765\uff0c\u8fd9\u662f\u91cd\u70b9\uff1b<\/li>\n<li>\u5176\u6b21\uff0c\u8fd9\u53ea\u662f\u5b9e\u73b0\u65e5\u671f\u683c\u5f0f\u5316\u7684\u4e00\u79cd\u65b9\u5f0f\uff0c\u5e76\u4e0d\u662f\u552f\u4e00\u65b9\u5f0f\uff0c\u8fd9\u79cd\u65b9\u5f0f\u76f8\u5bf9\u6bd4\u8f83\u7b80\u5355\uff0c\u4ec5\u4f9b\u53c2\u8003\uff1b<\/li>\n<\/ul>\n<h2>\u5b9e\u73b0\u539f\u7406<\/h2>\n<ol>\n<li>\u901a\u8fc7Date\u5bf9\u8c61\u7684\u76f8\u5173\u65b9\u6cd5\u83b7\u53d6\u5230\u5e74\u6708\u65e5\u65f6\u5206\u79d2\u7b49\u6570\u636e\uff0c\u518d\u5b9a\u4e49\u683c\u5f0f\u5316\u7684\u952e\u6bd4\u5982\uff1a\u5e74\u5bf9<code>y<\/code>\uff0c\u6708\u5bf9\u5e94<code>M<\/code>\u7b49\uff0c\u751f\u6210\u4e00\u4e2a\u952e\u503c\u5bf9\u8c61\uff1b<\/li>\n<li>\u6700\u4e3a\u6838\u5fc3\u7684\u5c31\u662f\u6b63\u5219\u5339\u914d\u4e86\uff0c\u5c06\u683c\u5f0f\u5316\u5b57\u7b26\u4e32\u8fdb\u884c\u6b63\u5219\u5339\u914d\u66ff\u6362\u5373\u53ef\uff0c\u5173\u4e8e\u6b63\u5219\u7684\u4f7f\u7528\u90a3\u662f\u4e00\u95e8\u5927\u5b66\u95ee\uff0c\u9700\u8981\u591a\u70b9\u65f6\u95f4\u53bb\u542d\uff1b<\/li>\n<li>\u4ee5\u4e0b\u662f\u4e00\u4e2a\u7b80\u5355\u7684\u793a\u4f8b\u4ee3\u7801\uff0c\u53ef\u6839\u636e\u9700\u8981\u5b8c\u5584\u3002<\/li>\n<\/ol>\n<h2>\u793a\u4f8b\u4ee3\u7801<\/h2>\n<pre><code class=\"language-javascript line-numbers\">function (date, fmt = 'yyyy-MM-dd') {\n    let map = {\n        'y': date.getFullYear(),\n        'M': date.getMonth() + 1,\n        'd': date.getDate()\n    };\n    return fmt.replace(\/([yMd])+\/g, function (match, key) {\n        let val = map[key].toString();\n        if (val.length === 1) val = '0' + val;\n        if (key === 'y') {\n            val = val.substr(4 - match.length);\n        } else {\n            val = val.substr(2 - match.length);\n        }\n        return val;\n    })\n}\n<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"<p>\u7b80\u8981\u8bf4\u660e \u9996\u5148\u8fd9\u662f\u4e00\u4e2a\u6700\u7b80\u5355\u7684\u5b9e\u73b0\uff0c\u5e76\u4e0d\u4e25\u8c28\uff0c\u4f46\u80fd\u8bf4\u660e\u95ee\u9898\uff0c\u5c06\u65e5\u671f\u683c\u5f0f\u5316\u7684\u6838\u5fc3\u601d\u60f3\u4f53\u73b0\u51fa\u6765\uff0c\u8fd9\u662f\u91cd\u70b9\uff1b \u5176\u6b21\uff0c\u8fd9\u53ea\u662f\u5b9e\u73b0\u65e5\u671f\u683c\u5f0f\u5316\u7684\u4e00\u79cd\u65b9\u5f0f\uff0c\u5e76\u4e0d\u662f\u552f\u4e00\u65b9\u5f0f\uff0c\u8fd9\u79cd\u65b9\u5f0f\u76f8\u5bf9\u6bd4\u8f83\u7b80\u5355\uff0c\u4ec5\u4f9b\u53c2\u8003\uff1b \u5b9e\u73b0\u539f\u7406 \u901a\u8fc7Date\u5bf9\u8c61\u7684\u76f8\u5173\u65b9\u6cd5\u83b7\u53d6\u5230\u5e74\u6708\u65e5\u65f6\u5206\u79d2\u7b49\u6570\u636e\uff0c\u518d\u5b9a\u4e49\u683c\u5f0f\u5316\u7684\u952e\u6bd4\u5982\uff1a\u5e74\u5bf9y\uff0c\u6708\u5bf9\u5e94M\u7b49\uff0c\u751f\u6210\u4e00\u4e2a\u952e\u503c\u5bf9\u8c61\uff1b \u6700\u4e3a\u6838\u5fc3\u7684\u5c31\u662f\u6b63\u5219\u5339\u914d\u4e86\uff0c\u5c06\u683c\u5f0f\u5316\u5b57\u7b26\u4e32\u8fdb\u884c\u6b63\u5219\u5339\u914d\u66ff\u6362\u5373\u53ef\uff0c\u5173\u4e8e\u6b63\u5219\u7684\u4f7f\u7528\u90a3\u662f\u4e00\u95e8\u5927\u5b66\u95ee\uff0c\u9700\u8981\u591a\u70b9\u65f6\u95f4\u53bb\u542d\uff1b \u4ee5\u4e0b\u662f\u4e00\u4e2a\u7b80\u5355\u7684\u793a\u4f8b\u4ee3\u7801\uff0c\u53ef\u6839\u636e\u9700\u8981\u5b8c\u5584\u3002 \u793a\u4f8b\u4ee3\u7801 function (date, fmt = &#8216;yyyy-MM-dd&#8217;) { let map = { &#8216;y&#8217;: date.getFullYear(), &#8216;M&#8217;: date.getMonth() + 1, &#8216;d&#8217;: date.getDate() }; 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