增加日期处理文件FDate.js
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								FDate.js
									
									
									
									
									
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								FDate.js
									
									
									
									
									
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					//时间格式化
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					Date.prototype.format = function (fmt) {
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					    fmt = fmt ?? "yyyy-MM-dd HH:mm:ss";
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					    date = new Date(this);
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					    var o = {
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					        "M+": date.getMonth() + 1,     //月份 
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					        "d+": date.getDate(),     //日 
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					        "H+": date.getHours(),     //小时 
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					        "m+": date.getMinutes(),     //分 
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					        "s+": date.getSeconds(),     //秒 
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					        "q+": Math.floor((date.getMonth() + 3) / 3), //季度 
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					        "S": date.getMilliseconds()    //毫秒 
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					    };
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					    if (/(y+)/.test(fmt))
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					        fmt = fmt.replace(RegExp.$1, (date.getFullYear() + "").substr(4 - RegExp.$1.length));
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					    for (var k in o)
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					        if (new RegExp("(" + k + ")").test(fmt))
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					            fmt = fmt.replace(RegExp.$1, (RegExp.$1.length == 1) ? (o[k]) : (("00" + o[k]).substr(("" + o[k]).length)));
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					    return fmt;
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					}
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					//为当前日期增加i天
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					Date.prototype.addDays = function (i) {
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					    let td = new Date(this);
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					    return new Date(td.setDate(td.getDate() + i))
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					}
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					//为当前日期增加i月
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					Date.prototype.addMonths = function (i) {
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					    let td = new Date(this);
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					    return new Date(td.setMonth(td.getMonth() + i))
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					}
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