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                #### JS 獲取當前日期 ~~~ var myDate = new Date(); myDate.getYear(); //獲取當前年份(2位) myDate.getFullYear(); //獲取完整的年份(4位,1970-????) myDate.getMonth(); //獲取當前月份(0-11,0代表1月) myDate.getDate(); //獲取當前日(1-31) myDate.getDay(); //獲取當前星期X(0-6,0代表星期天) myDate.getTime(); //獲取當前時間(從1970.1.1開始的毫秒數) myDate.getHours(); //獲取當前小時數(0-23) myDate.getMinutes(); //獲取當前分鐘數(0-59) myDate.getSeconds(); //獲取當前秒數(0-59) myDate.getMilliseconds(); //獲取當前毫秒數(0-999) myDate.toLocaleDateString(); //獲取當前日期 var mytime=myDate.toLocaleTimeString(); //獲取當前時間 myDate.toLocaleString( ); //獲取日期與時間 ~~~ js 日期比較大小,js判斷日期是否在區間內,js判斷時間段是否在另外一個時間段內 js判斷時間區間是否在另外一個時間區間內,js時間格式化,js時間比較大小 ~~~ /** * 日期解析,字符串轉日期 * @param dateString 可以為2017-02-16,2017/02/16,2017.02.16 * @returns {Date} 返回對應的日期對象 */ function dateParse(dateString){ var SEPARATOR_BAR = "-"; var SEPARATOR_SLASH = "/"; var SEPARATOR_DOT = "."; var dateArray; if(dateString.indexOf(SEPARATOR_BAR) > -1){ dateArray = dateString.split(SEPARATOR_BAR); }else if(dateString.indexOf(SEPARATOR_SLASH) > -1){ dateArray = dateString.split(SEPARATOR_SLASH); }else{ dateArray = dateString.split(SEPARATOR_DOT); } return new Date(dateArray[0], dateArray[1]-1, dateArray[2]); }; /** * 日期比較大小 * compareDateString大于dateString,返回1; * 等于返回0; * compareDateString小于dateString,返回-1 * @param dateString 日期 * @param compareDateString 比較的日期 */ function dateCompare(dateString, compareDateString){ if(isEmpty(dateString)){ alert("dateString不能為空"); return; } if(isEmpty(compareDateString)){ alert("compareDateString不能為空"); return; } var dateTime = dateParse(dateString).getTime(); var compareDateTime = dateParse(compareDateString).getTime(); if(compareDateTime > dateTime){ return 1; }else if(compareDateTime == dateTime){ return 0; }else{ return -1; } }; /** * 判斷日期是否在區間內,在區間內返回true,否返回false * @param dateString 日期字符串 * @param startDateString 區間開始日期字符串 * @param endDateString 區間結束日期字符串 * @returns {Number} */ function isDateBetween(dateString, startDateString, endDateString){ if(isEmpty(dateString)){ alert("dateString不能為空"); return; } if(isEmpty(startDateString)){ alert("startDateString不能為空"); return; } if(isEmpty(endDateString)){ alert("endDateString不能為空"); return; } var flag = false; var startFlag = (dateCompare(dateString, startDateString) < 1); var endFlag = (dateCompare(dateString, endDateString) > -1); if(startFlag && endFlag){ flag = true; } return flag; }; /** * 判斷日期區間[startDateCompareString,endDateCompareString]是否完全在別的日期區間內[startDateString,endDateString] * 即[startDateString,endDateString]區間是否完全包含了[startDateCompareString,endDateCompareString]區間 * 在區間內返回true,否返回false * @param startDateString 新選擇的開始日期,如輸入框的開始日期 * @param endDateString 新選擇的結束日期,如輸入框的結束日期 * @param startDateCompareString 比較的開始日期 * @param endDateCompareString 比較的結束日期 * @returns {Boolean} */ function isDatesBetween(startDateString, endDateString, startDateCompareString, endDateCompareString){ if(isEmpty(startDateString)){ alert("startDateString不能為空"); return; } if(isEmpty(endDateString)){ alert("endDateString不能為空"); return; } if(isEmpty(startDateCompareString)){ alert("startDateCompareString不能為空"); return; } if(isEmpty(endDateCompareString)){ alert("endDateCompareString不能為空"); return; } var flag = false; var startFlag = (dateCompare(startDateCompareString, startDateString) < 1); var endFlag = (dateCompare(endDateCompareString, endDateString) > -1); if(startFlag && endFlag){ flag = true; } return flag; }; ~~~
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