{"id":186,"date":"2008-03-07T21:50:52","date_gmt":"2008-03-07T13:50:52","guid":{"rendered":"http:\/\/www.xujiwei.com\/blog\/?p=186"},"modified":"2010-01-29T21:00:04","modified_gmt":"2010-01-29T13:00:04","slug":"add-dataadd-method-to-date-in-javascript","status":"publish","type":"post","link":"https:\/\/xujiwei.com\/blog\/2008\/03\/add-dataadd-method-to-date-in-javascript\/","title":{"rendered":"JavaScript \u4e2d\u4e3a Date \u7c7b\u5b9e\u73b0 DateAdd \u65b9\u6cd5"},"content":{"rendered":"<p>JavaScript\u00a0\u4e2d\u7684\u5e76\u6ca1\u6709\u63d0\u4f9b\u50cf\u00a0VBScript\u00a0\u91cc\u7684\u00a0DateAdd\u00a0\u65b9\u6cd5\u7528\u4e8e\u65e5\u671f\u7684\u64cd\u4f5c\uff0c\u50cf\u52a0\u4e00\u5e74\uff0c\u51cf\u4e00\u4e2a\u6708\u4ec0\u4e48\u7684\uff0c\u8fd9\u5728\u670d\u52a1\u7aef\u7ecf\u5e38\u7528\u5230\uff0c\u6bd4\u5982\u8bbe\u7f6e\u00a0Cookie\u00a0\u7684\u5230\u671f\u65f6\u95f4\u4e3a\u73b0\u5728\u65f6\u95f4\u7684\u540e\u4e00\u5e74\uff0c\u90a3\u4e48\u5c31\u9700\u8981\u4f7f\u7528\u8fd9\u4e2a\u65b9\u6cd5\u4e86\u3002<\/p>\n<p>\u867d\u7136\u00a0JavaScript\u00a0\u4e2d\u6ca1\u6709\u00a0DateAdd\u00a0\u65b9\u6cd5\uff0c\u4f46\u662f\u00a0Date\u00a0\u7c7b\u5374\u6709\u8bbe\u7f6e\u5e74\u6708\u65e5\u65f6\u5206\u79d2\u7684\u65b9\u6cd5\uff0c\u6bd4\u5982\u00a0setFullYear\u3001setMonth\u00a0\u4e4b\u7c7b\u7684\uff0c\u800c\u4e14\uff0c\u8fd9\u4e9b\u4e2a\u65b9\u6cd5\u7684\u53c2\u6570\u662f\u53ef\u4ee5\u4e3a\u8d1f\u7684\uff0c\u5728\u8bbe\u7f6e\u4e4b\u540e\uff0c\u00a0Date\u00a0\u7c7b\u4f1a\u81ea\u884c\u8fdb\u884c\u8c03\u6574\uff0c\u6bcf\u4e2a\u6708\u662f30\u5929\u8fd8\u662f31\u5929\uff0c\u5e74\u4efd\u662f\u4e0d\u662f\u95f0\u5e74\u90fd\u4e0d\u7528\u6211\u4eec\u6765\u7ba1\u4e86\uff0c\u53ea\u7ba1\u8bbe\u7f6e\u503c\u5c31\u662f\u3002<\/p>\n<p>\u6709\u4e86\u8fd9\u4e2a\u7279\u6027\u4e4b\u540e\uff0c\u6211\u4eec\u5c31\u53ef\u4ee5\u5f88\u65b9\u4fbf\u7684\u6765\u4e3a\u00a0Date\u00a0\u7c7b\u6dfb\u52a0\u00a0add\u00a0\u65b9\u6cd5\u4e86\u3002\u4e4b\u6240\u4ee5\u4e0d\u6dfb\u52a0\u4e00\u4e2a\u00a0DateAdd\u00a0\u65b9\u6cd5\u800c\u662f\u7ed9\u00a0Date\u00a0\u7c7b\u6dfb\u52a0\u4e00\u4e2a\u00a0add\u00a0\u65b9\u6cd5\u662f\u56e0\u4e3a\u6211\u89c9\u5f97\u90a3\u6837\u66f4\u52a0\u65b9\u4fbf\uff0c\u5f53\u7136\u4f60\u4e5f\u53ef\u4ee5\u5c06\u00a0Date\u00a0\u7c7b\u7684\u00a0add\u00a0\u65b9\u6cd5\u8f6c\u6362\u6210\u4e3a\u4e00\u4e2a\u5168\u5c40\u51fd\u6570\u00a0DateAdd\u3002<\/p>\n<p>\u4e3a\u4e86\u5bf9\u6bcf\u4e00\u4e2a\u00a0Date\u00a0\u7c7b\u7684\u5b9e\u4f8b\u90fd\u6709\u6548\uff0c\u8fd9\u91cc\u7528\u5230\u4e86\u00a0prototype\u00a0\u5bf9\u8c61\u3002<\/p>\n<p>\u5728\u00a0VBScript\u00a0\u91cc\u7684\u00a0DateAdd\u00a0\u65b9\u6cd5\u662f\u7528\u4e00\u4e2a\u5b57\u7b26\u4e32\u6765\u63a7\u5236\u6240\u52a0\u7684\u91cf\u662f\u5e74\u8fd8\u662f\u6708\u8fd8\u662f\u5176\u4ed6\u7684\uff0c\u6240\u4ee5\u5728\u8fd9\u91cc\u6211\u4e5f\u6a21\u4eff\u00a0VBScript\u00a0\u91cc\u7684\u00a0DateAdd\u00a0\u65b9\u6cd5\uff0c\u4f7f\u7528\u4e00\u4e2a\u5b57\u7b26\u4e32\u6765\u63a7\u5236\u6240\u52a0\u91cf\u5bf9\u5e94\u7684\u90e8\u5206\uff0c\u6bd4\u5982\u00a0y\u00a0\u4ee3\u8868\u5e74\uff0cm\u00a0\u4ee3\u8868\u6708\u3002<\/p>\n<p>\u6700\u540e\u5f97\u5230\u7684\u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n<div class=\"codeHead\">\u7a0b\u5e8f\u4ee3\u7801\uff1a<a href=\"javascript:CopyText($('CODE_2717'));\">[ \u590d\u5236\u4ee3\u7801\u5230\u526a\u8d34\u677f ]<\/a><\/div>\n<div id=\"CODE_2717\" class=\"codeMain\">\n<ul>\n<li>Date.prototype.add\u00a0=\u00a0function(part,\u00a0value)\u00a0{<\/li>\n<li> value\u00a0*=\u00a01;<\/li>\n<li> if(isNaN(value))\u00a0{<\/li>\n<li> value\u00a0=\u00a00;<\/li>\n<li> }<\/li>\n<li> switch(part)\u00a0{<\/li>\n<li> case\u00a0\"y\":<\/li>\n<li> this.setUTCFullYear(this.getUTCFullYear()\u00a0+\u00a0value);<\/li>\n<li> break;<\/li>\n<li> case\u00a0\"m\":<\/li>\n<li> this.setUTCMonth(this.getUTCMonth()\u00a0+\u00a0value);<\/li>\n<li> break;<\/li>\n<li> case\u00a0\"d\":<\/li>\n<li> this.setUTCDate(this.getUTCDate()\u00a0+\u00a0value);<\/li>\n<li> break;<\/li>\n<li> case\u00a0\"h\":<\/li>\n<li> this.setUTCHours(this.getUTCHours()\u00a0+\u00a0value);<\/li>\n<li> break;<\/li>\n<li> case\u00a0\"n\":<\/li>\n<li> this.setUTCMinutes(this.getUTCMinutes()\u00a0+\u00a0value);<\/li>\n<li> break;<\/li>\n<li> case\u00a0\"s\":<\/li>\n<li> this.setUTCSeconds(this.getUTCSeconds()\u00a0+\u00a0value);<\/li>\n<li> break;<\/li>\n<li> default:<\/li>\n<li> }<\/li>\n<li>}<\/li>\n<\/ul>\n<\/div>\n<p>\u4ee3\u7801\u91cc\u7684\u00a0getUTCFullYear\u00a0\u7b49\u7b49\u4e5f\u53ef\u4ee5\u6362\u6210\u901a\u5e38\u7528\u7684\u00a0getFullYear\uff0c\u56e0\u4e3a\u662f\u76f8\u5bf9\u8c03\u6574\uff0c\u6240\u4ee5\u7528\u54ea\u4e00\u4e2a\u662f\u6ca1\u6709\u533a\u522b\u7684\u3002<\/p>\n<p>\u5e0c\u671b\u6b64\u6587\u5bf9\u4f60\u6709\u6240\u5e2e\u52a9\u3002<\/p>\n<p>xujiwei<\/p>\n","protected":false},"excerpt":{"rendered":"<p>JavaScript\u00a0\u4e2d\u7684\u5e76\u6ca1\u6709\u63d0\u4f9b\u50cf\u00a0VBScript\u00a0\u91cc\u7684\u00a0DateAdd\u00a0 &hellip;<\/p>\n<p class=\"read-more\"><a href=\"https:\/\/xujiwei.com\/blog\/2008\/03\/add-dataadd-method-to-date-in-javascript\/\">\u7ee7\u7eed\u9605\u8bfb &raquo;<\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[11],"tags":[111,112,28],"_links":{"self":[{"href":"https:\/\/xujiwei.com\/blog\/wp-json\/wp\/v2\/posts\/186"}],"collection":[{"href":"https:\/\/xujiwei.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/xujiwei.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/xujiwei.com\/blog\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/xujiwei.com\/blog\/wp-json\/wp\/v2\/comments?post=186"}],"version-history":[{"count":0,"href":"https:\/\/xujiwei.com\/blog\/wp-json\/wp\/v2\/posts\/186\/revisions"}],"wp:attachment":[{"href":"https:\/\/xujiwei.com\/blog\/wp-json\/wp\/v2\/media?parent=186"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/xujiwei.com\/blog\/wp-json\/wp\/v2\/categories?post=186"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/xujiwei.com\/blog\/wp-json\/wp\/v2\/tags?post=186"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}