{"id":302,"date":"2025-11-29T09:25:49","date_gmt":"2025-11-29T01:25:49","guid":{"rendered":"https:\/\/www.52runoob.com\/?p=302"},"modified":"2025-11-29T09:25:49","modified_gmt":"2025-11-29T01:25:49","slug":"js%e4%b8%ad%e3%80%90data%e3%80%91%e8%af%a6%e8%a7%a3_js-date","status":"publish","type":"post","link":"https:\/\/www.52runoob.com\/index.php\/2025\/11\/29\/js%e4%b8%ad%e3%80%90data%e3%80%91%e8%af%a6%e8%a7%a3_js-date\/","title":{"rendered":"JS\u4e2d\u3010Data\u3011\u8be6\u89e3_js date"},"content":{"rendered":"\n

\u597d\u7684\uff0c\u6211\u5e2e\u4f60\u6574\u7406\u4e00\u4efd JavaScript \u4e2d Date<\/code> \u5bf9\u8c61\uff08JS \u4e2d\u7684\u65f6\u95f4\u4e0e\u65e5\u671f\u5904\u7406\uff09\u8be6\u89e3<\/strong>\uff0c\u4ece\u57fa\u7840\u5230\u9ad8\u7ea7\u65b9\u6cd5\uff0c\u8986\u76d6\u5e38\u7528\u7528\u6cd5\u3001\u5b9e\u4f8b\u548c\u6ce8\u610f\u4e8b\u9879\u3002<\/p>\n\n\n\n

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\u4e00\u3001Date \u5bf9\u8c61\u6982\u5ff5<\/strong><\/h1>\n\n\n\n
    \n
  • Date<\/code> \u662f JavaScript \u5185\u7f6e\u5bf9\u8c61\uff0c\u7528\u6765\u5904\u7406 \u65e5\u671f\u548c\u65f6\u95f4<\/strong><\/li>\n\n\n\n
  • \u5185\u90e8\u4ee5 \u6beb\u79d2\u65f6\u95f4\u6233<\/strong>\uff081970-01-01 00:00:00 UTC \u8d77\u7684\u6beb\u79d2\u6570\uff09\u5b58\u50a8<\/li>\n\n\n\n
  • \u652f\u6301\u521b\u5efa\u3001\u683c\u5f0f\u5316\u3001\u6bd4\u8f83\u3001\u8fd0\u7b97<\/li>\n<\/ul>\n\n\n\n
    \n\n\n\n

    \u4e8c\u3001\u521b\u5efa Date \u5bf9\u8c61<\/strong><\/h1>\n\n\n\n

    1. \u5f53\u524d\u65f6\u95f4<\/strong><\/h3>\n\n\n
    \nlet now = new Date();\nconsole.log(now); \/\/ \u4f8b\u5982\uff1a2025-11-29T08:15:00.000Z\n\n<\/pre><\/div>\n\n\n
    2. \u6307\u5b9a\u65e5\u671f\u5b57\u7b26\u4e32<\/strong><\/h3>\n\n\n
    \nlet d1 = new Date("2025-12-01T10:30:00");\nlet d2 = new Date("2025\/12\/01 10:30:00"); \/\/ \u63a8\u8350 YYYY\/MM\/DD \u683c\u5f0f\n\n<\/pre><\/div>\n\n\n
    3. \u6307\u5b9a\u5e74\u6708\u65e5\uff08\u6570\u5b57\u5f62\u5f0f\uff09<\/strong><\/h3>\n\n\n
    \n\/\/ new Date(year, monthIndex, day, hours, minutes, seconds, ms)\n\/\/ monthIndex \u4ece 0 \u5f00\u59cb\uff080 = \u4e00\u6708, 11 = \u5341\u4e8c\u6708\uff09\nlet d3 = new Date(2025, 11, 1, 10, 30, 0);\nconsole.log(d3); \/\/ 2025-12-01T10:30:00.000Z\n\n<\/pre><\/div>\n\n\n
    4. \u4f7f\u7528\u65f6\u95f4\u6233<\/strong><\/h3>\n\n\n
    \nlet timestamp = Date.now(); \/\/ \u5f53\u524d\u65f6\u95f4\u6233\uff08\u6beb\u79d2\uff09\nlet d4 = new Date(timestamp);\n\n<\/pre><\/div>\n\n\n
    \n\n\n\n
    \u4e09\u3001Date \u5e38\u7528\u65b9\u6cd5<\/strong><\/h1>\n\n\n\n
    1. \u83b7\u53d6\u65f6\u95f4\u4fe1\u606f<\/strong><\/h2>\n\n\n\n
    \u65b9\u6cd5<\/th>\u63cf\u8ff0<\/th><\/tr><\/thead>
    getFullYear()<\/code><\/td>\u83b7\u53d6\u5e74\u4efd\uff08\u56db\u4f4d\uff09<\/td><\/tr>
    getMonth()<\/code><\/td>\u83b7\u53d6\u6708\u4efd\uff080~11\uff09<\/td><\/tr>
    getDate()<\/code><\/td>\u83b7\u53d6\u65e5\u671f\uff081~31\uff09<\/td><\/tr>
    getDay()<\/code><\/td>\u83b7\u53d6\u661f\u671f\u51e0\uff080=\u5468\u65e5, 6=\u5468\u516d\uff09<\/td><\/tr>
    getHours()<\/code><\/td>\u83b7\u53d6\u5c0f\u65f6\uff080~23\uff09<\/td><\/tr>
    getMinutes()<\/code><\/td>\u83b7\u53d6\u5206\u949f\uff080~59\uff09<\/td><\/tr>
    getSeconds()<\/code><\/td>\u83b7\u53d6\u79d2\uff080~59\uff09<\/td><\/tr>
    getMilliseconds()<\/code><\/td>\u83b7\u53d6\u6beb\u79d2\uff080~999\uff09<\/td><\/tr>
    getTime()<\/code><\/td>\u83b7\u53d6\u65f6\u95f4\u6233\uff08\u6beb\u79d2\uff09<\/td><\/tr>
    getTimezoneOffset()<\/code><\/td>\u83b7\u53d6\u672c\u5730\u65f6\u533a\u4e0e UTC \u7684\u5dee\u503c\uff08\u5206\u949f\uff09<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n
    \nlet now = new Date();\nconsole.log(now.getFullYear()); \/\/ 2025\nconsole.log(now.getMonth());    \/\/ 10 (11\u6708)\nconsole.log(now.getDate());     \/\/ 29\nconsole.log(now.getDay());      \/\/ 6 (\u5468\u516d)\n\n<\/pre><\/div>\n\n\n
    \n\n\n\n
    2. \u8bbe\u7f6e\u65f6\u95f4<\/strong><\/h2>\n\n\n\n
    \u65b9\u6cd5<\/th>\u63cf\u8ff0<\/th><\/tr><\/thead>
    setFullYear(year)<\/code><\/td>\u8bbe\u7f6e\u5e74\u4efd<\/td><\/tr>
    setMonth(month)<\/code><\/td>\u8bbe\u7f6e\u6708\u4efd\uff080~11\uff09<\/td><\/tr>
    setDate(day)<\/code><\/td>\u8bbe\u7f6e\u65e5\u671f<\/td><\/tr>
    setHours(hour)<\/code><\/td>\u8bbe\u7f6e\u5c0f\u65f6<\/td><\/tr>
    setMinutes(minute)<\/code><\/td>\u8bbe\u7f6e\u5206\u949f<\/td><\/tr>
    setSeconds(sec)<\/code><\/td>\u8bbe\u7f6e\u79d2<\/td><\/tr>
    setMilliseconds(ms)<\/code><\/td>\u8bbe\u7f6e\u6beb\u79d2<\/td><\/tr>
    setTime(ms)<\/code><\/td>\u8bbe\u7f6e\u65f6\u95f4\u6233<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n
    \nlet d = new Date();\nd.setFullYear(2026);\nd.setMonth(0); \/\/ \u4e00\u6708\nd.setDate(1);  \/\/ 1\u53f7\nconsole.log(d); \/\/ 2026-01-01T...\n\n<\/pre><\/div>\n\n\n
    \n\n\n\n
    3. \u683c\u5f0f\u5316\u65e5\u671f<\/strong><\/h2>\n\n\n\n
    1. \u5185\u7f6e\u65b9\u6cd5<\/strong><\/h3>\n\n\n
    \nlet now = new Date();\nconsole.log(now.toString());       \/\/ Thu Nov 29 2025 16:15:00 GMT+0800 (CST)\nconsole.log(now.toUTCString());    \/\/ Thu, 29 Nov 2025 08:15:00 GMT\nconsole.log(now.toISOString());    \/\/ 2025-11-29T08:15:00.000Z\nconsole.log(now.toDateString());   \/\/ Thu Nov 29 2025\nconsole.log(now.toTimeString());   \/\/ 16:15:00 GMT+0800 (CST)\nconsole.log(now.toLocaleString()); \/\/ 2025\/11\/29 16:15:00 (\u672c\u5730\u683c\u5f0f)\n\n<\/pre><\/div>\n\n\n
    2. \u81ea\u5b9a\u4e49\u683c\u5f0f<\/strong><\/h3>\n\n\n
    \nlet d = new Date();\nlet formatted = `${d.getFullYear()}-${d.getMonth()+1}-${d.getDate()} ${d.getHours()}:${d.getMinutes()}:${d.getSeconds()}`;\nconsole.log(formatted); \/\/ 2025-11-29 16:15:0\n\n<\/pre><\/div>\n\n\n
    \n\n\n\n
    4. \u65e5\u671f\u8fd0\u7b97<\/strong><\/h2>\n\n\n\n
    1. \u52a0\u51cf\u5929\u6570<\/strong><\/h3>\n\n\n
    \nlet today = new Date();\nlet tomorrow = new Date(today.getTime() + 24*60*60*1000); \/\/ \u52a0\u4e00\u5929\n\n<\/pre><\/div>\n\n\n
    2. \u4e24\u4e2a\u65e5\u671f\u5dee\u503c<\/strong><\/h3>\n\n\n
    \nlet d1 = new Date("2025-12-01");\nlet d2 = new Date("2025-11-29");\nlet diffDays = (d1 - d2) \/ (1000*60*60*24); \/\/ \u5dee\u503c\u5929\u6570\nconsole.log(diffDays); \/\/ 2\n\n<\/pre><\/div>\n\n\n
    \n\n\n\n
    5. \u5e38\u7528\u6280\u5de7<\/strong><\/h2>\n\n\n\n
      \n
    1. \u83b7\u53d6\u65f6\u95f4\u6233\uff08\u6beb\u79d2\uff09<\/strong><\/li>\n<\/ol>\n\n\n
      \nlet timestamp = Date.now();\n\n<\/pre><\/div>\n\n\n
        \n
      1. \u751f\u6210\u5f53\u524d\u65e5\u671f\u7684 YYYY-MM-DD<\/strong><\/li>\n<\/ol>\n\n\n
        \nfunction getTodayStr(){\n    let d = new Date();\n    return `${d.getFullYear()}-${d.getMonth()+1}-${d.getDate()}`;\n}\n\n<\/pre><\/div>\n\n\n
          \n
        1. \u5224\u65ad\u95f0\u5e74<\/strong><\/li>\n<\/ol>\n\n\n
          \nfunction isLeapYear(year){\n    return (year%4===0 &amp;&amp; year%100!==0) || (year%400===0);\n}\n\n<\/pre><\/div>\n\n\n
          \n\n\n\n
          6. \u6ce8\u610f\u4e8b\u9879<\/strong><\/h2>\n\n\n\n
            \n
          1. \u6708\u4efd\u4ece 0 \u5f00\u59cb<\/strong>\n