工具函数(获取url ， 时间格式化，随机数)

(function(window,$){
function Tools() {

}
// url 
Tools.prototype.readUrlToParams = function() {
        var url = location.href;
        var nameValue;
        var paraString = url.substring(url.indexOf("?") + 1, url.length).split("&");
        var paraObj = {};
        for (var i = 0; nameValue = paraString[i]; i++) {
            var name = nameValue.substring(0, nameValue.indexOf("="));
            var value = nameValue.substring(nameValue.indexOf("=") + 1, nameValue.length);
            if (value.indexOf("#") > -1) {
                value = value.split("#")[0];
            }
            paraObj[name] = value;
        }
        return paraObj;
    }//时间戳转化为多久以前
Tools.prototype.formatMsgTime = function(timespan) {
    // 转换成时间
    var dateTime = new Date(timespan);
    // 获取时间戳对应的年月日是分秒
    var year = dateTime.getFullYear();
    var month = dateTime.getMonth() + 1;
    var day = dateTime.getDate();
    var hour = dateTime.getHours();
    var minute = dateTime.getMinutes();
    var second = dateTime.getSeconds();
    // 获取当前时间
    var now = new Date();
    // 转换成时间戳
    var now_new = Date.parse(now); //typescript转换写法
    // 初始变量
    var milliseconds = 0;
    var timeSpanStr;
    // 时间戳作差求时间差
    milliseconds = now_new - timespan;
    // 小于一分钟等于刚刚
    if (milliseconds <= 1000 * 60 * 1) {
        timeSpanStr = '刚刚 :';
    }
    // 小于一小时是多少分钟前
    else if (1000 * 60 * 1 < milliseconds && milliseconds <= 1000 * 60 * 60) {
        timeSpanStr = Math.round((milliseconds / (1000 * 60))) + '分钟前 ';
    }
    // 小于一天是多少小时
    else if (1000 * 60 * 60 * 1 < milliseconds && milliseconds <= 1000 * 60 * 60 * 24) {
        timeSpanStr = Math.round(milliseconds / (1000 * 60 * 60)) + '小时前 ';
    }
    // 小于半个月是多少天前
    else if (1000 * 60 * 60 * 24 < milliseconds && milliseconds <= 1000 * 60 * 60 * 24 * 15) {
        timeSpanStr = Math.round(milliseconds / (1000 * 60 * 60 * 24)) + '天前 ';
    }
    // 几个月
    else if (milliseconds > 1000 * 60 * 60 * 24 * 15 && year == now.getFullYear()) {
        timeSpanStr = month + '-' + day + ' ' + hour + ':' + minute;
    } else {
        // 几年
        timeSpanStr = year + '-' + month + '-' + day + ' ' + hour + ':' + minute;
    }
    return timeSpanStr;
};
//时间转化(时间戳转化为标准时间)
Tools.prototype.formatDateTime = function(inputTime) {
    var date = new Date(inputTime);
    var y = date.getFullYear();
    var m = date.getMonth() + 1;
    m = m < 10 ? ('0' + m) : m;
    var d = date.getDate();
    d = d < 10 ? ('0' + d) : d;
    var h = date.getHours();
    h = h < 10 ? ('0' + h) : h;
    var minute = date.getMinutes();
    var second = date.getSeconds();
    minute = minute < 10 ? ('0' + minute) : minute;
    second = second < 10 ? ('0' + second) : second;
    return y + '/' + m + '/' + d + ' ' + h + ':' + minute + ':' + second;
};
// 时间戳的差转化时分秒
Tools.prototype.getNowFormatDate = function (timespan) {
    var date = timespan; //计算剩余的毫秒数
    var h = parseInt(date / 1000 / 60 / 60 % 24 , 10); //计算剩余的小时 
    var M = parseInt(date / 1000 / 60 % 60, 10);//计算剩余的分钟 
    var s = parseInt(date / 1000 % 60, 10);//计算剩余的秒数 
    var seperator2 = ":";
    
    if (h <= 9) {
        h = "0" + h;
    }
    if (M <= 9) {
        M = "0" + M;
    }
    if (s <= 9) {
        s = "0" + s;
    }
    var currentdate = h + seperator2 + M
        + seperator2 + s;
    return currentdate;
},
// 获取分秒
Tools.prototype.getNowHS = function (timespan , newTime) {

    var date = timespan - newTime; //计算剩余的毫秒数
    var M = parseInt(date / 1000 / 60 % 60, 10);//计算剩余的分钟 
    var s = parseInt(date / 1000 % 60, 10);//计算剩余的秒数 
    var seperator2 = ":";
    if(M < 0 || s < 0){
        return '00:00'
    }
    if (M <= 9 && M > 0) {
        M = "0" + M;
    }
    if (s <= 9 && s > 0) {
        s = "0" + s;
    }
    var currentdate = M + seperator2 + s;
    return currentdate;
},// 获取n为随机数
Tools.prototype.randomNum = function(n) {
    var t = '';
    for (var i = 0; i < n; i++) {
        t += Math.floor(Math.random() * 10);
    }
    return t;
}
// 图片预加载

Tools.prototype.preLoadImages = function(urls) {// 可以是String Array或者String

var argsLen = arguments.length,

loadImage = function (url) {

var img = new Image();

img.src = url;

};

if (argsLen == 1) {

if (typeof (urls) == "string" && (sLen = urls.length) > 1) {// 预加载一个图片

loadImage(urls);

}

else if (Object.prototype.toString.call(arguments[0]) == "[object Array]" && urls.length > 0) {// 预加载多个图片

for (var i = 0; i < urls.length; i++) {

loadImage(urls[i]);

}

}

}

}

window.Tools = Tools;
})(window,$)