• Date 日期格式化


      1 <span id="time"></span>
      2  <script>
      3 
      4 //名称:日期加法函数
      5 //参数:part(year、month、day、hour、minute、second、millisecond)
      6 //返回:Date对象
      7 Date.prototype.add = function (part, value) {
      8     if (!value || isNaN(value)) value = 0;
      9     switch (part) {
     10         case "year":
     11             this.setFullYear(this.getFullYear() + value);
     12             break;
     13         case "month":
     14             this.setMonth(this.getMonth() + value);
     15             break;
     16         case "day":
     17             this.setDate(this.getDate() + value);
     18             break;
     19         case "hour":
     20             this.setHours(this.getHours() + value);
     21             break;
     22         case "minute":
     23             this.setMinutes(this.getMinutes() + value);
     24             break;
     25         case "second":
     26             this.setSeconds(this.getSeconds() + value);
     27             break;
     28         case "millisecond":
     29             this.setMilliseconds(this.getMilliseconds() + value);
     30             break;
     31         default:
     32     }
     33     return this;
     34 };
     35 
     36 Date.prototype.addYears = function (value) {
     37     if (!value || isNaN(value)) value = 0;
     38     this.setFullYear(this.getFullYear() + value);
     39     return this;
     40 };
     41 
     42 Date.prototype.addMonths = function (value) {
     43     if (!value || isNaN(value)) value = 0;
     44     this.setMonth(this.getMonth() + value);
     45     return this;
     46 };
     47 
     48 Date.prototype.addDays = function (value) {
     49     if (!value || isNaN(value)) value = 0;
     50     this.setDate(this.getDate() + value);
     51     return this;
     52 };
     53 
     54 Date.prototype.addHours = function (value) {
     55     if (!value || isNaN(value)) value = 0;
     56     this.setHours(this.getHours() + value);
     57     return this;
     58 };
     59 
     60 Date.prototype.addMinutes = function (value) {
     61     if (!value || isNaN(value)) value = 0;
     62     this.setMinutes(this.getMinutes() + value);
     63     return this;
     64 };
     65 
     66 Date.prototype.addSeconds = function (value) {
     67     if (!value || isNaN(value)) value = 0;
     68     this.setSeconds(this.getSeconds() + value);
     69     return this;
     70 };
     71 
     72 Date.prototype.addMilliseconds = function (value) {
     73     if (!value || isNaN(value)) value = 0;
     74     this.setMilliseconds(this.getMilliseconds() + value);
     75     return this;
     76 };
     77 
     78 //名称:日期加法函数
     79 //参数:time(日期字符串,示例:12:00:00)
     80 //返回:Date对象
     81 Date.prototype.addTime = function (time) {
     82     var timeRegex = /^([0-1]?d|2[0-3])(:[0-5]?d){1,2}$/g;
     83     if (timeRegex.test(time)) {
     84         var value = Date.parse("1970/1/1 " + time) - Date.parse("1970/1/1");
     85         this.setMilliseconds(this.getMilliseconds() + value);
     86     }
     87     return this;
     88 };
     89 
     90 //名称:日期格式化函数
     91 //参数:format(示例:yyyy-MM-dd hh:mm:ss)、zeroize(是否补零)
     92 //返回:日期字符串
     93 Date.prototype.toCustomString = function (format, zeroize) {
     94     if (!zeroize) zeroize = false;
     95     var dy = this.getFullYear();
     96     var dM = this.getMonth() + 1;
     97     var dd = this.getDate();
     98     var dh = this.getHours();
     99     var dm = this.getMinutes();
    100     var ds = this.getSeconds();
    101     var dS = this.getMilliseconds();
    102     var orm = {
    103         "y+": dy.toString(),
    104         "M+": !zeroize ? dM.toString() : dM < 10 ? '0' + dM : dM.toString(),
    105         "d+": !zeroize ? dd.toString() : dd < 10 ? '0' + dd : dd.toString(),
    106         "h+": !zeroize ? dh.toString() : dh < 10 ? '0' + dh : dh.toString(),
    107         "m+": !zeroize ? dm.toString() : dm < 10 ? '0' + dm : dm.toString(),
    108         "s+": !zeroize ? ds.toString() : ds < 10 ? '0' + ds : ds.toString(),
    109         "S": dS.toString()
    110     };
    111     for (var i in orm) {
    112         var patt = new RegExp(i);
    113         if (patt.test(format)) {
    114             var item = orm[i];
    115             var ms = format.match(patt);
    116             var result = ms[0];
    117             if (i === "S") {
    118                 format = format.replace(result, item);
    119             } else {
    120                 format = format.replace(result, item.substr(item.length - result.length));
    121             }
    122         }
    123     }
    124     return format;
    125 };
    126 window.onload = function(){
    127     var time = document.getElementById("time");
    128      
    129     setInterval('time.innerText = new Date().toCustomString("yyyy-MM-dd hh:mm:ss")',1000);
    130 
    131 }
    132 
    133 </script>

    没有格式啥的要求的话,就用Date下的toLocaleString()显示年月日时间或者toLocaleDateString()显示年月日

    1 <span id="time"></span>
    2  <script>
    3  var time = document.getElementById("time");
    4  setInterval('time.innerHTML = new Date().toLocaleString()', 1000);
    5 </script>
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  • 原文地址:https://www.cnblogs.com/double405/p/5332146.html
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