js工具类大全

/**********      日期处理函数       *********/
<script type="text/javascript" src="${springMacroRequestContext.contextPath}/assets/js/calendar/WdatePicker.js"></script>

       <input class="btn btn-sm btn-default" type="button" onclick="upday(this);" id="upday" value="上一天"></input>
       <input class="btn btn-sm btn-default" type="button" onclick="today(this);" id="today" value="今天"></input>
       <input class="btn btn-sm btn-default" type="button" onclick="nextday(this);" id="nextday" value="下一天"></input>
                           
<script type="text/javascript">
    $(document).ready(function() {
        $('#tableBill').DataTable({
           "ajax": {
                "url": getContext() + "********",
                "type": "POST",
                "data": function(param) {
                    param.billing_type = $("#billing_type").val();
                    param.Stime = $("#startTime").val();
                    param.Etime = $("#endTime").val();
                    param.show_type = $("#show_type").val();
                }
            },
         /* 查询结果 */
    function getResult() {
            $('#tableBill').DataTable().ajax.reload(null, false);
            if ($("#show_type").val() === "month") {
                document.getElementById("upday").value = "上一月";
                document.getElementById("today").value = "本月";
                document.getElementById("nextday").value = "下一月";
            } else {
                document.getElementById("upday").value = "上一天";
                document.getElementById("today").value = "今天";
                document.getElementById("nextday").value = "下一天";
            }
        }
    /*时间转化函数*/
        Date.prototype.format = function(format) {
            var o = {
                "M+": this.getMonth() + 1, //month 
                "d+": this.getDate(), //day 
                "h+": this.getHours(), //hour 
                "m+": this.getMinutes(), //minute 
                "s+": this.getSeconds(), //second 
                "q+": Math.floor((this.getMonth() + 3) / 3), //quarter 
                "S": this.getMilliseconds() //millisecond 
            }
            if (/(y+)/.test(format)) {
                format = format.replace(RegExp.$1, (this.getFullYear() + "").substr(4 - RegExp.$1.length));
            }
            for (var k in o) {
                if (new RegExp("(" + k + ")").test(format)) {
                    format = format.replace(RegExp.$1, RegExp.$1.length == 1 ? o[k] : ("00" + o[k]).substr(("" + o[k]).length));
                }
            }
            return format;
        }
        
    /*按天获取天期*/
    function GetDateStr(AddDayCount) {
            var dd = null;
            if ($("#startTime").val() == null || $("#startTime").val() == "" && $("#endTime").val() == null || $("#endTime").val() == "") {
                dd = new Date();
            } else {
                dd = new Date(Date.parse($("#endTime").val()));
            }
            dd.setDate(dd.getDate() + AddDayCount); //获取AddDayCount天后的天期    
            var y = dd.getFullYear();
            var m = dd.getMonth() + 1; //获取当前月份的天期
            if (m < 10) {
                m = "0" + m;
            }
            var d = dd.getDate();
            if (d < 10) {
                d = "0" + d;
            }
            return y + "-" + m + "-" + d;
        }
    /*根据传入天期获取当月最后一天的时间*/
      function getLastDay(date,num) {      
          if (date==null || date=="") {
              date = new Date().format("yyyy-MM-dd");
          }
             var new_year = date.split("-")[0];    //取当前的年份          
             var new_month = date.split("-")[1]++;//取下一个月的第一天，方便计算（最后一天不固定）          
             if(date.split("-")[1]>12) {         
              new_month -=12;        //月份减          
              new_year++;            //年份增          
             }
             new_month=+new_month+num;
             if(new_month>12) {         
                  new_month -=12;        //月份减          
                  new_year++;            //年份增          
             }
             if (new_month<10) {
                 new_month = "0"+new_month;
             }
             if (new_month<1) {
                 new_month = 12 ;
                 new_year--;
             }
             
             var new_date = new Date(new_year,new_month,01);                       
             return new_year+"-"+new_month+"-"+(new Date(new_date.getTime()-1000*60*60*24)).getDate();//获取当月最后一天日期          
        }
      /*根据传入天期获取当月第一天的时间*/
    function getFirstDay(date,num){
        if (date==null || date=="") {
              date = new Date().format("yyyy-M-dd");
          }
            var new_year = date.split("-")[0];    //取当前的年份
            var new_month = date.split("-")[1];  //取出来当前月份
            new_month=+new_month+num;
            if(new_month>12) {         
              new_month -=12;        //月份减          
              new_year++;            //年份增          
             }
             if (new_month<10) {
                 new_month = "0"+new_month;
             }
             if (new_month<1) {
                 new_month =12;
                 new_year--;
             }
             
            return new_year+"-"+new_month+"-"+"01";
    }
        
    /*查询上一天、月*/
    function upday(obj) {
            if (obj.value == "上一天") {
                document.getElementById("startTime").value = GetDateStr(-2);
                document.getElementById("endTime").value = GetDateStr(-1);
                $('#tableBill').DataTable().ajax.reload(null, false);
            } else if (obj.value == "上一月") {
                
                document.getElementById("startTime").value = getFirstDay($("#endTime").val(),-1);
                document.getElementById("endTime").value = getLastDay($("#endTime").val(),-1);
                $('#tableBill').DataTable().ajax.reload(null, false);
            }
        }
        /*查询本天、月*/

    function today(obj) {
            if (obj.value == "今天") {
                document.getElementById("startTime").value = "";
                document.getElementById("endTime").value = "";
                $('#tableBill').DataTable().ajax.reload(null, false);
            } else if (obj.value == "本月") {
                document.getElementById("startTime").value = "";
                document.getElementById("endTime").value = "";
                $('#tableBill').DataTable().ajax.reload(null, false);
            }
        }
        /*查询下一天、月*/

    function nextday(obj) {
        if (obj.value == "下一天") {
            var now = new Date();
            var nowStr = now.format("yyyy-MM-dd");
            if ($("#startTime").val() == null || $("#startTime").val() == "" &&
                $("#endTime").val() == null || $("#endTime").val() == "" || $("#endTime").val() == nowStr) {
                javascript: void(0);
            } else {
                document.getElementById("startTime").value = GetDateStr(0);
                document.getElementById("endTime").value = GetDateStr(+1);
                $('#tableBill').DataTable().ajax.reload(null, false);
            }
        } else if (obj.value == "下一月") {
            var now = new Date();
            var nowStr = now.format("yyyy-MM-dd");
            if ($("#startTime").val() == null || $("#startTime").val() == "" &&
                $("#endTime").val() == null || $("#endTime").val() == "" || $("#startTime").val() == getFirstDay(nowStr,0)) {
                javascript: void(0);
            } else {
                document.getElementById("startTime").value = getFirstDay($("#endTime").val(),+1);
                document.getElementById("endTime").value = getLastDay($("#endTime").val(),+1);
                $('#tableBill').DataTable().ajax.reload(null, false);
            }
        }
    }
   </script>