日期的常规运用

 

js 将字符串转换为Date类型，并与当前时间比较

function checkForm(){  
                var reserveTm = document.getElementById("reserveTm").value;  
                var myDate= new Date(Date.parse(reserveTm.replace(/-/g, "/")));  
        var now = new Date();  
        if(myDate.getFullYear() < now.getFullYear()){  
            document.getElementById("point").innerHTML = "预约日期必须大于当前日期，请重新选择！";  
            return false;  
        }  
        if(myDate.getMonth() < now.getMonth()){  
            document.getElementById("point").innerHTML = "预约日期必须大于当前日期，请重新选择！";  
            return false;  
        }  
        if(myDate.getMonth() < now.getMonth()){  
            document.getElementById("point").innerHTML = "预约日期必须大于当前日期，请重新选择！";             return false;  
        }else{  
            if(myDate.getMonth() == now.getMonth() && myDate.getDate() < now.getDate()){  
document.getElementById("point").innerHTML = "预约日期必须大于当前日期，请重新选择！";             return false;  
            }  
            return true;  
        }  
    }  

将字符串形式的日期转换成日期对象

var strTime="2011-04-16"; //字符串日期格式             
var date= new Date(Date.parse(strTime.replace(/-/g,   "/"))); //转换成Data();  
  
var month=date.getMonth()+1; //获取当前月份  
  
------------------------------------------------------------------------------------------------------  
  
date.getYear();        //获取当前年份(2位)  
date.getFullYear();    //获取完整的年份(4位,1970-????)  
date.getMonth();       //获取当前月份(0-11,0代表1月)  
date.getDate();        //获取当前日(1-31)  
date.getDay();         //获取当前星期X(0-6,0代表星期天)  
date.getTime();        //获取当前时间(从1970.1.1开始的毫秒数)  
date.getHours();       //获取当前小时数(0-23)  
date.getMinutes();     //获取当前分钟数(0-59)  
date.getSeconds();     //获取当前秒数(0-59)  
date.getMilliseconds();    //获取当前毫秒数(0-999)  
date.toLocaleDateString();     //获取当前日期  
var mytime=date.toLocaleTimeString();     //获取当前时间  
date.toLocaleString( );        //获取日期与时间  

 

练习：easyui的一道题目

需求：设置的时间超过1天，显示绿色。没超过，显示原来的值。

html代码

html代码

{
                    field: 'Wing', title: '擂台(<b style="color:green">绿色</b>:已建 <b style="color:blue">蓝色</b>:未建)', width: 200, editor: 'text', sortable: true,
                    formatter: function (value, row, index) {
                        //填写的时间
                        var e = getDate(value);
                        var years = e.getFullYear();
                        var months = e.getMonth();
                        var days = e.getDate();
                        var hours = e.getHours();
                        var minutes = e.getMinutes();
                        var seconds = e.getSeconds();
                        var strTime1 = e.format("yyyy-MM-dd hh:mm:ss");
                        var date1 = new Date(Date.parse(strTime1.replace(/-/g, "/"))); //转换成Data();
                        //现在的时间
                        var d = new Date();
                        var strTime = d.format("yyyy-MM-dd hh:mm:ss");
                        var date = new Date(Date.parse(strTime.replace(/-/g, "/"))); //转换成Data();

                        
////根据浏览器判断
                        //firefox
                        if (isFirefox = navigator.userAgent.indexOf("Firefox") > 0) {
                            //设置的时间加1天
                            var onetime = DateNextDay(date1.toLocaleDateString()) + " " + date1.toTimeString().substring(0, 8);
                            var f = getDate(onetime);
                            var strTimeOne = f.format("yyyy-MM-dd hh:mm:ss");
                            var dateOne = new Date(Date.parse(strTimeOne.replace(/-/g, "/"))); //转换成Data();
                            console.info(DateNextDay(date1.toLocaleDateString()))

                            if (date.getTime() > dateOne.getTime()) {
                                return '<b style="color:green">' + value + '</b>';
                            } else if (date.getTime() < dateOne.getTime()) {
                                return '<b style="color:black">' + value + '</b>';
                            } else {
                                return false;
                            }
                        }
                        //chome(Safari)
                        if (isSafari = navigator.userAgent.indexOf("Safari") > 0) {
                            //设置的时间加1天
                            var onetime = DateNextDayChome(date1.toLocaleDateString()) + " " + date1.toTimeString().substring(0, 8);
                            var f = getDate(onetime);
                            var strTimeOne = f.format("yyyy-MM-dd hh:mm:ss");
                            var dateOne = new Date(Date.parse(strTimeOne.replace(/-/g, "/"))); //转换成Data();
                            console.info(DateNextDayChome(date1.toLocaleDateString()))

                            if (date.getTime() > dateOne.getTime()) {
                                return '<b style="color:green">' + value + '</b>';
                            } else if (date.getTime() < dateOne.getTime()) {
                                return '<b style="color:black">' + value + '</b>';
                            } else {
                                return false;
                            }
                        }                               
                    },
                },

 

date.js 辅助文档

date.js 辅助文档

/*格式化时间*/

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;
}

//字符串转化为时间
function getDate(strDate) {
    if (strDate != null) {
        var date = eval('new Date(' + strDate.replace(/\d+(?=-[^-]+$)/,
     function (a) { return parseInt(a, 10) - 1; }).match(/\d+/g) + ')');
        return date;
    } else {
        return "";
    }

}

//js时间比较(yyyy-mm-dd hh:mi:ss)
function compareDate(strDate1, strDate2) {
    var date1 = new Date(strDate1.replace(/\-/g, "\/"));
    var date2 = new Date(strDate2.replace(/\-/g, "\/"));
    //return date1 - date2;
    console.info(date1)
    if (date1 > date2) {
        return 1;
    } else {
        return -1;
    }
}
//因为firefox与chome不兼容
//firefox设置时间加1天
function DateNextDay(d2) {
    //slice返回一个数组 
    var str = d2.slice(5) + "- " + d2.slice(0, 4);
    var d = new Date(str);
    var d3 = new Date(d.getFullYear(), d.getMonth()-1, d.getDate() + 1);
    //var month = returnMonth(d3.getMonth());
    var month = d3.getMonth();
    var day = d3.getDate();
    //day = day < 10 ? "0" + day : day;
    var str2 = d3.getFullYear() + "年" + month + "月" + day+"日";
    return str2;
}


//chome设置时间加1天
function DateNextDayChome(d2) {
    //slice返回一个数组 
    var str = d2.replace("月", "/");
    var str1 = str.replace("日", "").substr(5) + "- " + d2.slice(0, 4);
    var d = new Date(str1);
    var d3 = new Date(d.getFullYear(), d.getMonth()-1, d.getDate() + 1);
    //var month = returnMonth(d3.getMonth());
    var month = d3.getMonth();
    var day = d3.getDate();
    //day = day < 10 ? "0" + day : day;
    var str2 = d3.getFullYear() + "年" + month + "月" + day + "月";
    return str2;
}
//返回月份 
function returnMonth(num) {
    var str = " ";
    switch (num) {
        case 0: str = "01"; break;
        case 1: str = "02"; break;
        case 2: str = "03"; break;
        case 3: str = "04"; break;
        case 4: str = "05"; break;
        case 5: str = "06"; break;
        case 6: str = "07"; break;
        case 7: str = "08"; break;
        case 8: str = "09"; break;
        case 9: str = "10"; break;
        case 10: str = "11"; break;
        case 11: str = "12"; break;
    }
    return str;
}