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  • IMD中一些JS方法总结

    1,日期格式化(如格式成2013-12-27 15:30,new Date().format("yyyy-MM-dd hh:mm:ss"),这种格式在safari浏览器上会出问题,可用.format("yyyy/MM/dd hh:mm:ss")代替):

     1 Date.prototype.format = function (format) {
     2     var o = {
     3         "M+": this.getMonth() + 1,
     4         "d+": this.getDate(),
     5         "h+": this.getHours(),
     6         "m+": this.getMinutes(),
     7         "s+": this.getSeconds(),
     8         "q+": Math.floor((this.getMonth() + 3) / 3),
     9         "S": this.getMilliseconds()
    10     }
    11     if (/(y+)/.test(format)) {
    12         format = format.replace(RegExp.$1, (this.getFullYear() + "").substr(4 - RegExp.$1.length));
    13     }
    14     for (var k in o) {
    15         if (new RegExp("(" + k + ")").test(format)) {
    16             format = format.replace(RegExp.$1, RegExp.$1.length == 1 ? o[k] : ("00" + o[k]).substr(("" + o[k]).length));
    17         }
    18     }
    19     return format;
    20 }

    2,日期相加减:()

    Date.prototype.DateAdd = function (strInterval, Number) {
        var dtTmp = this;
        switch (strInterval) {
            case 's': return new Date(Date.parse(dtTmp) + (1000 * Number));
            case 'n': return new Date(Date.parse(dtTmp) + (60000 * Number));
            case 'h': return new Date(Date.parse(dtTmp) + (3600000 * Number));
            case 'd': return new Date(Date.parse(dtTmp) + (86400000 * Number));
            case 'w': return new Date(Date.parse(dtTmp) + ((86400000 * 7) * Number));
            case 'q': return new Date(dtTmp.getFullYear(), (dtTmp.getMonth()) + Number * 3, dtTmp.getDate(), dtTmp.getHours(), dtTmp.getMinutes(), dtTmp.getSeconds());
            case 'm': return new Date(dtTmp.getFullYear(), (dtTmp.getMonth()) + Number, dtTmp.getDate(), dtTmp.getHours(), dtTmp.getMinutes(), dtTmp.getSeconds());
            case 'y': return new Date((dtTmp.getFullYear() + Number), dtTmp.getMonth(), dtTmp.getDate(), dtTmp.getHours(), dtTmp.getMinutes(), dtTmp.getSeconds());
        }
    }
    

    3,将指定日期转换成UTC时间:

    //return utc date
    function getUTCtime(date) {
    
        var UTCyear = date.getUTCFullYear();
        var UTCmonth = date.getUTCMonth() + 1;
        var UTCday = date.getUTCDate();
        var UTChours = date.getUTCHours();
        var UTCmin = date.getUTCMinutes();
        var UTCseconds = date.getUTCSeconds();
        var UTCtimeStr = UTCyear + "/" + UTCmonth + "/" + UTCday + " " + UTChours + ":" + UTCmin + ":" + UTCseconds;
        return new Date(UTCtimeStr);
    }
    

    4,获取URL中的所有参数:

    function getUrlParam(string) {
        var obj = {};
    
        if (string.indexOf("?") != -1) {
            var string = string.substr(string.indexOf("?") + 1);
            var strs = string.split("&");
            for (var i = 0; i < strs.length; i++) {
                var tempArr = strs[i].split("=");
                obj[tempArr[0]] = unescape(tempArr[1]);
            }
        }
        return obj;
    }
    

     5,从数组中获取最大值和最小值:

    1 var  numbers = [5, 458 , 120 , -215 , 228 , 400 , 122205, -85411];   
    2 var maxInNumbers = Math.max.apply(Math, numbers);   
    3 var minInNumbers = Math.min.apply(Math, numbers); 

     6,数组排序:

      

     1 var  numbers = [5, 458 , 120 , -215 , 228 , 400 , 122205, -85411];   
     2 var maxInNumbers = Math.max.apply(Math, numbers);   
     3 var minInNumbers = Math.min.apply(Math, numbers); 
     4 //默认按照各个元素的ASCII码逐位比较。
     5 var sorterArr=numbers.sort();//结果 -215,-85411,120,122205,228,400,458
     6 //自定义排序规则,按数字大小排序。
     7 var sortByNumArr=numbers.sort(function (a,b){
     8     if(a>b){
     9         return 1;//return a>b 在safari浏览器上不正常。
    10     }else if(a<b){
    11         return -1;
    12     }else{
    13         return 0;
    14     }
    15 });
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  • 原文地址:https://www.cnblogs.com/skybreak/p/3494279.html
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