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;

}