js utils.js常用方法源码

//格式化时间显示方式yyyy-MM-dd hh:mm:ss
utils.formatDate = function (v, format) {
    if (!v) return "";
    var d = v;
    if (typeof v === 'string') {
        if (v.indexOf("/Date(") > -1)
            d = new Date(parseInt(v.replace("/Date(", "").replace(")/", ""), 10));
        else
            d = new Date(Date.parse(v.replace(/-/g, "/").replace("T", " ").split(".")[0]));
            //.split(".")[0] 用来处理出现毫秒的情况，截取掉.xxx，否则会出错
    }
    var o = {
        "M+": d.getMonth() + 1,  //month
        "d+": d.getDate(),       //day
        "h+": d.getHours(),      //hour
        "m+": d.getMinutes(),    //minute
        "s+": d.getSeconds(),    //second
        "q+": Math.floor((d.getMonth() + 3) / 3),  //quarter
        "S": d.getMilliseconds() //millisecond
    };
    if (/(y+)/.test(format)) {
        format = format.replace(RegExp.$1, (d.getFullYear() + "").substr(4 - RegExp.$1.length));
    }
    for (var k in o) {
        if (new RegExp("(" + k + ")").test(format)) {
            format = format.replace(RegExp.$1, RegExp.$1.length == 1 ? o[k] : ("00" + o[k]).substr(("" + o[k]).length));
        }
    }
    return format;
};
//获取地址栏参数
utils.getQueryString = function (name) {
    var reg = new RegExp("(^|&)" + name + "=([^&]*)(&|$)");
    var r = window.location.search.substr(1).match(reg);
    if (r != null) return unescape(r[2]); return null;
}
utils.isNullOrEmpty=function(str){
    if (str == "" || str == null || str == undefined) {
        return true;
    }
    return false;
}