Date 类型使用自 UTC 1970 年 1 月 1日 午夜 开始经过的毫秒数来保存日期。
创建日期对象
var now = new Date();//获取当前日期
Date.parse ( ) 接受一个表示日期的字符串参数,返回相应毫秒数。这个日期格式通常因地区而异。
实际上直接将日期字符串传给Date构造函数,也会后台先调用一下Date.parse(), 所以下面两条等价
var someDate = new Date(Date.parse("May 25, 2004"));
var someDate = new Date("May 25, 2004");
Date.UTC() 参数分别是 年份、月份(0-11)、天(1-31)、小时(0-23)、分钟、秒、毫秒数。省略的参数自动填充为0(天数为1)
同样这个UTC参数也可以直接传给Date构造函数
// 2005年5月5日下午5:55:55
var allFives = new Date(Date.UTC("2005, 4, 5, 17, 55, 55"));
var allFives = new Date("2005, 4, 5, 17, 55, 55");
Date.now() 返回当前时刻的那个毫秒数
继承的方法
Date的toLocaleString() 会返回日期和时间(会包含AM或PM) 但不包含时区信息
toString() 返回带有时区信息的日期时间
Chrome
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Firefox
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Date.valeuOf() 会返回日期的毫秒表示,因此日期大小是可以比较的
格式化方法
也是因浏览器而异 最后的两个结果一样,但推荐使用toUTCString().
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bfshghPj9mceTIkVbU8o9alJAA4rOMH2SR6yPmR+E8zsmy8eBZCDivbf4lGuU+9o3CmCkzF/DHjx83Z8+ebdbW1pqtra2ZdTVZVQEXiFrpV4lK5LYI1FARX1Zwad81bwcR8LHhteIXaUrj76oz5jCysAN/+PBhc/78+ebMmTPNxsbGzNoPC4rFj0iyszt69Gi72CDv+iQgCEXeZZVsEWISW7FyX/jLHkWQ+pqA0ybugKOA1epiP9kH8CsJOGOTj+Yht407zTx3nGPL/VPyeDVP0U7/JQHviqf8Tp06Na/TeImVbYDP0PcDJb7mxCzlKGgb+zLmMLPvGTgL7MKFC83p06eb9fX1mbUbFiwLXguPoxZlFI0oTixoRAEbC53rvsUrSu3wj7sz+pDgUVcS8JgP4KvfI8x1NSRw6hdKtphzjF1qG+csksddErMcL88DYhoFNVKLF1/b0lxmv+zDkTb5nFjxNSOm3gs1or8xh53RBDyLBoustCBZgBQJwc2bN+dihj0LSAnFiKhPEXMqiQ7kvIEYxKr5AHXa4VLiLhdyXGJwHXedFPqp5aDxcR594riVa4Tr2J5C/DgO5Z/tpXil/DLZL/tQRxsgf52Tx7ICHmMZc9gZ7RFKacGWFqTEVz4XL15sy7lz59odedfiFYoRyQs75kTMsQSca3zUfylGtnUJU6kt1+RAiTeHPG7lGsnzUCP2I0rxcn4lsl/2iTlxHm8u0a9rnkTptTfmsDLKHzG7FizHKHYIEvVarIj25uZme378+PGFxYtv3t0C8RRf4Bd3c7QhJ/rpE2OJCO2OHTvWHmOukexDP307cCjlDLltzJs+dE49/VAv4twK2ukxUBeKF8dXi5fHksEvxsk+1GnsuW2G/nMOkT5/Yw4TCzvwg/43wq4Fiw2h0I4rC5AECnsWQuqzDWLM+DyXGOon+lEfH3lQJAK5LopDrY6jbNyANPaYl4rGJ+GXXfllH7WH6EMb+orzF/OL4435UfDJ/cseKcWj4KfYEV6fGA9fYmQf8tH7IedG0bwC/vFGHOmqM+Ywsu8ZuDHPCm4i+REJNxGJuyjZdAOKYm/MYccCbp4riHPcfSPK+hdHBAGPYo1f/heDMYcdC7gxxkwUC7gxxkwUC7gxxkwUC7gxxkwUC7gxxkwUC7gxxkwUC7gxxkwUC7gxxkyUfQK+u7vb3L59e3Y1HD5kwYcy+HZBfZ8I/PToUXPr3Xeaz156sS07X3ze2iHWffXKy82j9VuzmqY9x/bNG681e/fvz6xNe45N8TY+/GBWs8gPn37Slty/SsxD0Of377/X+ui6lAO+tVi1eTDGmLFZEPAHDx40V65caa5evdrs7e3NrMNAuPj0HIIVhQtxQ0h1HsUQ8VUdYvnt22+1dbRDdHe//uvcJqIPQovgRuEH2uMf/UTNB4gtMe7KIRLzhto8GGPM2MwF/P7PAnT58uXm2rVrxY829yHhyl9kFInCGs8Bwcy72SyOgHjjhxCX6oE2EvkM8Uu7dmLF3beo9SEk9PIbMg/GGDMGrYDfuXOnuXTpUnP9+vXmyZMnbcXdu3dbQd/e3m6vxyCKXRRMiTLXfQIOtEHso3AKrms77K66mujXcqAtOeRHP8YY87yoCjjCPaaAI3Jfv/7qXOw4IqZbH63Nd8TxEQaUxJN6PYZBREvPp0s7bKCuJPr4Y88iDaUcInlcxhjzvBjtEUoXiBs71SjOCCLiK7FFVBHRLgEvtcFfO+e+3Xf2FbXdN+QcMl1xjTHmWTLaHzFrSKhLAhd33Bzzbroknlmwo3jSHgHHnqENbXMd1zXRhz4B76s3xphnxYKAw0H/G2ENBFf/3U5FAixxz8+SOXIdfbRTjz6UuHOON4RI1y4Zm2JHunKgT9nyTccYY54X+wR8qiC4td13jb7dtzHGrDK/GgE3xpjDhgXcGGMmigXcGGMmygs7OzuNi4uLi8v0infgxhgzUSzgxhgzUSzgxhgzUSzgxhgzUSzgxhgzUSzgE0C/8jP2l4yNAd93/uabbzZffvnlzDIOfKd6jMkcUIwx/2VBwG/cuNHcu3dvdrW6LLuY+VWckydPPnMBJD5Ce+TIkVbUhvyYA7kdPXq09Ykli9cYAh7zo+SYWTSH8CwEnPGSS0S5j32jMGbKzAX88ePHzdmzZ5u1tbVma2trZl1NVlXAxUF+jYe2J06ceKY/wYYods3bQQR8bBg/81Cau646Yw4jCzvwhw8fNufPn2/OnDnTbGxszKz9sKBY/IgkOzt2lBKivOuTgCAUeZdVskWImXersS/8ZY87YOprAk4b2sovClitLvaTfQC/koAzNvlkIaVtFvDYf9wt04Zr2lN/6tSphTziPMV5oP+SgOfxRD8KfakPivohVrYBPkPfD5T4mhOzlKOgbZ5vYw4r+56Bs8AuXLjQnD59ullfX59Zu5HQaOFx1KKMoqHFywJkQSMK2FjoXPctXlFqh3/cndGHRI+6koDHfABfiWiuqyGBU79QssWcS7Fj35mcP9eIIt/dThzNMSX3necBvyiokZI4Eie+tjkXyH7Zh6PeD/GcWPE1I6beCzWivzGHndEEPIsGi6y0IFmAFAnBzZs352KGPQtICcWIqE8RcyqJDuS8gRjEqvkAddrhUuIuF3JcYnAdd52UOFbaLiPgXOPDkWvNCTFzP/Qdx6H8s11jj+SxlMh+2Yc6vTbkqHPyWFbAYyxjDjujPUIpLdjSgpTQyOfixYttOXfuXLsj71q8QjEieWHHnIgZBVDkvIEYxKr5cI2P+i/FyLYhwkTbsQR8iMBpHLQXGnskj6VE9ss+MSfO480l+g2Zp9Jrb8xhZZQ/YnYtWI5R7NitUq/Fimhvbm6258ePH19YvPjm3S0QT/EFfnE3Rxtyoh8JngRQZBGj3bFjx9pjzDWSfeinbwcOpZwjtB1DwLviRGiXxxdfK0G7PJYMfjFO9qFOY89tMxpHjT5/Yw4TCzvwg/43wq4Fiw2h0I4rLk7a4IcwYc9CSH22QYwZn+cSQ/1EP+rjIw+KRCDXRXGo1XGUjRuQxh7zUtH4JPyy53FxnoW3lDdzgr0m4BDzo2DP/cseif0pP4rGlyGXGA9fYmQf8tH7IedG0bwC/vFGHOmqM+Ywsu8ZuDHPCm4iuuEIbiISd1Gy6QYUxd6Yw44F3DxXEOe4+0aUEecMAh7FGr/8LwZjDjsWcGOMmSgWcGOMmSgWcGOMmSgWcGOMmSgWcGOMmSgWcGOMmSgrK+CfvfTi7MwYY0yJZy7gCPHQEsnXxhhjFtkn4Lu7u83t27dnV8PhQxZ8KINvF9T3iZQYKsxR2EtF7Hzx+YL91rvvND8VPhiSiX4bH34ws+6Px3Uf9Ee/JZ+9+/ebb954rbV/9crLzaP1W7Oa/3xYRR9YyR+tN8aYPhYE/MGDB+13TF+9erXZ29ubWYehjz8j3E8r4LlNlw9iGQV4CIjot2+/1Yor4P/Dp5+055HcrgY5yJ9zBBsfCbsEnXjfv//e/AbDfDFvFnBjzEGYC/j9nwXn8uXLzbVr14ofbe5DAo4I1b78CCTGNVEu2Z9GwBFNdr4SUUBsJbgS2dLOHZ9sx08CXQI7PhzjORAHAdcuXALOzY7vCDnIvBtjDi+tgN+5c6e5dOlSc/369ebJkydtxd27d1tB397ebq/HIopxlzBH+gScepUo1FAScASfa4QVMd76aG1hZ4xIEys/8oA+AY+iTxt28IpBXSmmMcYchKqAI9zPWsAhX5cY0gYQxq9ff7VXIBHw7T/9cS6ulCjgYmg8UWqPaJM/hT7iDtwYY56G0R6hDKUkxtEmsRtSMvkRRQ120XEnHHfNEa6xU98HsfJOP5MfqRhjzNMw2h8xh1IS3pIt0lcvEM/8eKMkrNi045ZI65l4hHb5j5ilRyicY+sT+tofS40x5iAsCDgc9L8RDmWoGEe6fBBE6imlZ9O1nXH0i38E7YtXEnD85aMioY7xZDPGmDHYJ+DPGoRsWQ7iY4wxv3Ys4MYYM1Geu4AbY4wZBwu4McZMlBd2dnYaFxcXF5fpFe/AjTFmoljAjTFmoljAjTFmoljAjTFmoljAjTFmoljAVwS+P50fdeDHHcYifzc7X1LG947XfmzDGDMtFgT8xo0bzb1792ZXqws/gkAZQkm05I/t6NGjzZEjRxaKRFSiKjs/wNBlhyyaQ1HMsQSccZNHjseYT5w4sXR+xpjVYy7gjx8/bs6ePdusra01W1tbM+tqMpaAC8QMUYttJKi5n5owCvwOIuBjQ97xxhLpqjPGTIeFHfjDhw+b8+fPN2fOnGk2NjZm1n4QKwQBoWRHyq5WYijB025VgogAZhEp2SKlHXPsC3/ZEV/yOqiAE4u88Y90CTi5x9woGg/tyUNzofyAXNQ+xiUf/Es+HLmWH0VjKo05gi8xFcsYM032PQNn8V+4cKE5ffp0s76+PrN2IzGRgHCUcHGMwiLxQ1xOnTq1IDa0U9suSu3wj48GJMD8UMVBBLzUhyB2FlTBdUkc8Yk3m1J85ioLOD6yxbmM5xorcwn4MWZdZ+LrYIyZLqMJeBQthAGBieIsJFwSmZs3b87FBPsQUVGMiPoUyonHQQcR8CiQNegTIS/1q7kQOb8S1MfxZyGOecf88KFPtct+JXJfxpjpMdojlGUFXD4XL15sy7lz59odeWxbIwqZyAKp+AcVcOpjvBrZV/1yjOT8SmRRJWZNwDnq0Unc2UP2y5ReF2PM9Bjlj5hZtKJYcZToUM9jB+olIoj25uZme378+PEFUcG39JiiJK74xUcotCEn+sk5ZLEu2TiPjy9q0O7YsWNz31IsGFPA+wS4r54cSzcZY8y0WNiBH/S/EWZBiGKFLf6xTUIKtJHIYs9iTX3tObNi5ufK6if6deUA1JdEl2viy498cixKFvmYh+ahS8Cxx3gaE6Uk4Dov+Qjqa/111RljpsO+Z+Bm9eEmknfQCLLEHRB92uSbCyIf/6VijJkuFvCJknftpR11Fvq+RyvGmGlhATfGmIliATfGmIliATfGmIliATfGmIliATfGmIliATfGmIliATfGmImy0gL+w6efNLfefaf5afZJRGOMMf9ln4Dv7u42t2/fnl0Nh08B8qERvl0wfjfIzhefN5+99OK8fPPGa83e/fttXR9jCjix6H/jww9mlv8gO+WrV15uHq3fmtXUyWMiRh/RZ0h7EfOLuTMnzA32nDfzyzzX7KV4XcTco0+MN3TugBiKR2xxkNeiK4eY9zLvo5ifYpJbfO/Shpj/+tvNto3aq2hctXVhzBgsCPiDBw+aK1euNFevXm329vZm1mHo+zV4g2YBHyoUzwr6ZwFSunIh12VvGIo7lGXaIxbkSz4SKgmDxgQIzLdvv9W20fmj79b/cwyCFn2I+f377y3Ul4ixQTF0A1E+tCNe39zhq9eAmDlHMfS1IJ5y4Fw+OW/qKH2QW6lfxSYuMWlHUbvaWGrrwpgxmAs4P3xw+fLl5tq1a/MvT1oGvVHzx7dZXFqwGRbFP37/u/kOSguHxZBtY0B/tVygr74EPhQgb/KVaJTGHtsvC7GIWeon7vqAuiwo9Kv5zAJXI+aLH/6Uf29uLuRAXb4h4Bd3rbkNR3avpfnAlueOa+Vfgni6ieS5j3U1SnMmiLX10Vqz/ac/trE5xvHXfGvrwpgxaAX8zp07zaVLl5rr1683T548aSvu3r3bCvr29nZ7fVAkLipxAeYFLoESQxbdMpREAbCRW8xlKMSUAOEbF3UWEYjtlyEKRJwXYtEn13HuYvuIXo8uIYzoNSEe84OI0RcCHuPTJj/CILc4pxw1P7Snjht4nI+u14K6rryJo/kmfmzb5wvRh3Py0JjIc/frv7bj5/zf//xnGzOOrSb+xjwrqgKOcI8l4FpUGRZcXLwZFsPzEHAhUcnC0UUcA34SKCiNvW/MJRg/ceWneUFMFJ8j/YmSoMTxEWvIWInLbrN08yAeIkfBRon9ZTQ/2r0SozYfy74Wpfbkrvx04+l6LxFDeQFHjQnR5kiuxKWOo/rjaAE3z5vRHqHUYFHwRi9RW7wiisUYaPHVOMgijGPAf2wBZ+zEjHGIj1jJpjb0J/JYSm3w78uF+rizziIn8thLKIfoX8sh598FOeXdf6b0WmTwp0+NgRyzgItYB8vka8xYjPZHzBpdC6dPzFgMJQFnsUQBGwp9dfnUxCnz41/+PF/kUYDiIq7l2DfmDP6lnLGRL3DMu8+Yi4i5MkbGqhg14msgn1L+MbbgOueFTe2I/fXrry7kKEqvBX1kW1cMUZqLGvRBAfph7PxPkyjWoDrZlunDmLFYEHA46H8jrMFC1ILIxMUcYRGwo9I/fykxhoQkL+Ya9BFjUSRcxJVtaDwWK8KETx6b+iL/+IijK4ca1Gcf5RhziLvPaO/yoZTmvkTMPY432kuxsGUB12snvzgHfa8F9dGeY6kQM9b17c4jOSa+FnCzquwT8KnAYo5iYowxh43JCTg7HHZFFm9jzGFnsjtwY4w57FjAjTFmoryws7PTuLi4uLhMr3gHbowxE8UCbowxE8UCbowxE8UCbowxE8UCbowxE8UCviLwPdFvvvlm8+WXX84sT0/+Dmq+pOzkyZP+UQFjfiUsCPiNGzeae/fuza5WF74kn7IMtD9y5Mi8IJQSTcVC2I4ePdrW8SX8sT0FMUQE5Sc7bUUWzaEo5lgCTp7kkeMxxhMnTiydnzFm9ZgL+OPHj5uzZ882a2trzdbW1sy6miwr4LRFHLNoSWxPnTrVXl+8eLHdoUbRwzcKdE0YhWL+0gKZ84501RljpsPCDvzhw4fN+fPnmzNnzjQbGxszaz+IFYKA+LEjZRerf6ZL8LRblfBqlxsp2SLaIStW7gt/2SXYXYKLHzkj4Jubm83HH3/cFuUIywg47WJuFPnSnr40F/GGQh9qH+OSH/4lH45cy4+ivMmx61EJvsRULGPMNNn3DJzFf+HCheb06dPN+vr6zNqNxEQCEkWPYxQWiR/ignBGsaGd2nZRaod/fDRAH/T197//fW6njW4AMQfOEW524JzH2JxrLII2WVAF1yVxxCfebEpjoB/aCeUrW5zLeE49fTKXgB9zqutMfB2MMdNlNAGPooUwIDBRnIWESyJz8+bNuZhgHyIqihFRn0I58Vw/P/OVUJIDAk4dbbhWHoLzGDdCW4S81G/sD3J+JZSXyEIcx01bneNDn2qX/Urkvowx02O0RyjLCrh82PVSzp0714ppbFsjCpnIAqn4/DiFxFlIvLDRZyTHoZ94naGfGD/PhchxSygvQcyagHPUo5O4s4fslym9LsaY6THKHzGzaEWx4ijRoZ7HDtRLRBBQnj9zfvz48QVRwbf0mKIkqvjFnTZtyIl+4jlIKEuimm2lviL0e+zYsXne9J9vGFDqK6O8BDFKAt4nwH315Fi6yRhjpsXCDvyg/40wC0IUK2zxj20IkKBNFNks1tTXnjMrZn6urH5KsVRHIceSqGYbMeN1Ho9iRWIe8i31JbDHeBpTTcB1XvIROe9IV50xZjrsewZuVh9uInkHjSBL3AHRp02+uSDy8V8qxpjpYgGfKHnXXtpRZ6Hve7RijJkWFnBjjJkoFnBjjJkoFnBjjJkoFnBjjJkoFnBjjJkoFnBjjJkoFnBjjJkoKy3gP3z6SXPr3Xean2afRDTGGPNf9gn47u5u+wVQy8KnAPnQCN8uGL8bZOeLz5vPXnpxXr5547Vm7/79tq6PMQWcWPS/8eEHM8t/kJ3y1SsvN4/Wb81q6uQxEaOP6DOkvYj5xdyZE+YGe86b+WWea/ZSvC5i7tEnxhs6d0AMxSO2OMhr0ZVDzHuZ91HMTzHJLb53aUPMf/3tZttG7VU0rtq6MGYMFgT8wYMHzZUrV5qrV682e3t7M+sw9P0avEGzgA8VimcF/bMAKV25kOuyNwzFHcoy7REL8iUfCZWEQWMCBObbt99q2+j80Xfr/zkGQYs+xPz+/fcW6kvE2KAYuoEoH9oRr2/u8NVrQMycoxj6WhBPOXAun5w3dZQ+yK3Ur2ITl5i0o6hdbSy1dWHMGMwF/P7Pb8DLly83165dm3950jLojZo/vs3i0oLNsCj+8fvfzXdQWjgshmwbA/qr5QJ99SXwoQB5k69EozT22H5ZiEXMUj9x1wfUZUGhX81nFrgaMV/88Kf8e3NzIQfq8g0Bv7hrzW04snstzQe2PHdcK/8SxNNNJM99rKtRmjNBrK2P1prtP/2xjc0xjr/mW1sXxoxBK+B37txpLl261Fy/fr158uRJW3H37t1W0Le3t9vrgyJxUYkLMC9wCZQYsuiWoSQKgI3cYi5DIaYECN+4qLOIQGy/DFEg4rwQiz65jnMX20f0enQJYUSvCfGYH0SMvhDwGJ82+REGucU55aj5oT113MDjfHS9FtR15U0czTfxY9s+X4g+nJOHxkSeu1//tR0/5//+5z/bmHFsNfE35llRFXCEeywB16LKsODi4s2wGJ6HgAuJShaOLuIY8JNAQWnsfWMuwfiJKz/NC2Ki+BzpT5QEJY6PWEPGSlx2m6WbB/EQOQo2Suwvo/nR7pUYtflY9rUotSd35acbT9d7iRjKCzhqTIg2R3IlLnUc1R9HC7h53oz2CKUGi4I3eona4hVRLMZAi6/GQRZhHAP+Yws4YydmjEN8xEo2taE/kcdSaoN/Xy7Ux511FjmRx15COUT/Wg45/y7IKe/+M6XXIoM/fWoM5JgFXMQ6WCZfY8ZitD9i1uhaOH1ixmIoCTiLJQrYUOiry6cmTpkf//Ln+SKPAhQXcS3HvjFn8C/ljI18gWPefcZcRMyVMTJWxagRXwP5lPKPsQXXOS9sakfsr19/dSFHUXot6CPbumKI0lzUoA8K0A9j53+aRLEG1cm2TB/GjMWCgMNB/xthDRaiFkQmLuYIi4Adlf75S4kxJCR5MdegjxiLIuEirmxD47FYESZ88tjUF/nHRxxdOdSgPvsox5hD3H1Ge5cPpTT3JWLucbzRXoqFLQu4Xjv5xTnoey2oj/YcS4WYsa5vdx7JMfG1gJtVZZ+ATwUWcxQTY4w5bExOwNnhsCuyeBtjDjuT3YEbY8xhxwJujDET5YWdnZ3GxcXFxWV6xTtwY4yZKBZwY4yZJE3z/wE5moktfCYd2QAAAABJRU5ErkJggg==" alt="" />
日期/时间组件方法
直接取得或设置特定值
get/setTime()
get/set(UTC)FullYear()
get/set(UTC)Month()
get/set(UTC)Date()
get(UTC)Day()
get/set(UTC)Hours()
get/set(UTC)Minutes()
get/set(UTC)Seconds()
get/set(UTC)Milliseconds()
getTimezoneOffset 返回本地与UTC时间相差的分钟数
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