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js 实现日期灵活格式化的小例子_javascript技巧

WBOY
WBOYOriginal
2016-05-16 17:28:401024browse
复制代码 代码如下:

/**
 * 时间对象的格式化;
 */
Date.prototype.format = function(format) { 
    /*
     * eg:format="YYYY-MM-dd hh:mm:ss";
     */
    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; 
}
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