js各类共用方法

function GetParameterValueByName(parametername) {
    var reg = new RegExp("(^|&)" + parametername + "=([^&]*)(&|$)");
    var r = window.location.search.substr(1).match(reg);
    if (r != null) return unescape(r[2]);
    return null;
}

使用方法:GetParameterValueByName("id")

js解析后台时间格式的json

在后台返回DateTime格式的json是总是出现的是/Date(1421245202219)/  所以用js写了个方法进行转换

function dateJsonToDate(val, hour, minute, second, ms) {
            var dataStr = "";
            if (val != null && val != "") {
                var date = new Date(parseInt(val.replace("/Date(", "").replace(")/", ""), 10));
                var month = date.getMonth() + 1 < 10 ? "0" + (date.getMonth() + 1) : date.getMonth() + 1;
                var currentDate = date.getDate() < 10 ? "0" + date.getDate() : date.getDate();
                dataStr += date.getFullYear() + "-" + month + "-" + currentDate;
                if (hour) {
                    var currenthour = date.getHours() < 10 ? "0" + date.getHours() : date.getHours();
                    dataStr += " " + currenthour;
                    if (minute) {
                        var currentminute = date.getMinutes() < 10 ? "0" + date.getMinutes() : date.getMinutes();
                        dataStr += ":" + currentminute;
                        if (second) {
                            var currentsecond = date.getSeconds() < 10 ? "0" + date.getSeconds() : date.getSeconds();
                            dataStr += ":" + currentsecond;
                            if (ms) {
                                var currentms = date.getMilliseconds() < 10 ? "0" + date.getMilliseconds() : date.getMilliseconds();
                                dataStr += "." + currentms;
                            }
                        }
                    }
                }
            }
            return dataStr;
        }

使用方法:dateJsonToDate(data.Now, true, true, true, true)

// Js获取Url参数
function GetRequest() {
    var url = location.search; //获取url中"?"符后的字串
    var theRequest = new Object();
    if (url.indexOf("?") != -1) {
        var str = url.substr(1);
        strs = str.split("&");
        for (var i = 0; i < strs.length; i++) {
            theRequest[strs[i].split("=")[0]] = unescape(strs[i].split("=")[1]);
        }
    }
    return theRequest;
}

// 保留指定位小数
function fomatFloat(src, pos) {
    return Math.round(src * Math.pow(10, pos)) / Math.pow(10, pos);
}

//数组删除指定元素
Array.prototype.delRepet = function () {
    //            this = this || [];
    var a = {};
    for (var i = 0; i < this.length; i++) {
        var v = this[i];
        if (typeof (a[v]) == 'undefined') {
            a[v] = 1;
        }
    };
    this.length = 0;
    for (var i in a) {
        this[this.length] = i;
    }
    return this;
}


/日期格式转换(yyyy-mm-dd hh:mm)
function ChangeDateFormatHM(date) {
    var da = new Date(parseInt(date.replace("/Date(", "").replace(")/", "").split("+")[0]));
    var month = da.getMonth() + 1 < 10 ? "0" + (da.getMonth() + 1) : da.getMonth() + 1;
    var currentDate = da.getDate() < 10 ? "0" + da.getDate() : da.getDate();
    var hour = da.getHours() < 10 ? "0" + da.getHours() : da.getHours()
    var minute = da.getMinutes() < 10 ? "0" + da.getMinutes() : da.getMinutes();
    return da.getFullYear() + "-" + month + "-" + currentDate + " " + hour + ":" + minute;
}

//日期格式转换(hh:mm:ss)
function ChangeDateFormatShortHMS(jsondate) {
    var date = new Date(parseInt(jsondate.replace("/Date(", "").replace(")/", "").split("+")[0]));
    var currentDate = date.getDate() < 10 ? "0" + date.getDate() : date.getDate();
    var hour = date.getHours() < 10 ? "0" + date.getHours() : date.getHours();
    var minute = date.getMinutes() < 10 ? "0" + date.getMinutes() : date.getMinutes();
    var second = date.getSeconds() < 10 ? "0" + date.getSeconds() : date.getSeconds();
    return hour + ":" + minute + ":" + second;
}

//日期格式转换(yyyy-mm-dd hh:mm:ss)
function ChangeDateFormatHMS(jsondate) {
    if (jsondate == undefined) {
        return "1990-01-01 A";
    }
    jsondate = jsondate.replace("/Date(", "").replace(")/", "");
    if (jsondate.indexOf("+") > 0) {
        jsondate = jsondate.substring(0, jsondate.indexOf("+"));
    }
    else if (jsondate.indexOf("-") > 0) {
        jsondate = jsondate.substring(0, jsondate.indexOf("-"));
    }

    var date = new Date(parseInt(jsondate, 10));
    var month = date.getMonth() + 1 < 10 ? "0" + (date.getMonth() + 1) : date.getMonth() + 1;
    var currentDate = date.getDate() < 10 ? "0" + date.getDate() : date.getDate();
    var hour = date.getHours() < 10 ? "0" + date.getHours() : date.getHours();
    var minute = date.getMinutes() < 10 ? "0" + date.getMinutes() : date.getMinutes();
    var second = date.getSeconds() < 10 ? "0" + date.getSeconds() : date.getSeconds();

    return date.getFullYear() + "-" + month + "-" + currentDate + " " + hour + ":" + minute + ":" + second;
}

//日期格式转换(yyyy-mm-dd)
function ChangeDateFormat(jsondate) {
    if (jsondate == undefined) {
        return "1990-01-01";
    }
    jsondate = jsondate.replace("/Date(", "").replace(")/", "");
    if (jsondate.indexOf("+") > 0) {
        jsondate = jsondate.substring(0, jsondate.indexOf("+"));
    }
    else if (jsondate.indexOf("-") > 0) {
        jsondate = jsondate.substring(0, jsondate.indexOf("-"));
    }

    var date = new Date(parseInt(jsondate, 10));
    var month = date.getMonth() + 1 < 10 ? "0" + (date.getMonth() + 1) : date.getMonth() + 1;
    var currentDate = date.getDate() < 10 ? "0" + date.getDate() : date.getDate();
    return date.getFullYear() + "-" + month + "-" + currentDate;
}

//获取字符串指定长度的字符
function GetString(Str, size) {
    if (Str.toString().length > size) {
        return Str.substring(0, size) + "...";
    }
    else {
        return Str;
    }
}