JS some common methods

String adds IsNullOrEmpty:

String.prototype.IsNullOrEmpty = function (r) {
if (r = = = Undefined | | r = = NULL | | r = = = "") {
return true;
} else {
return false;
}
}

JSON to string:

function Jsontostring (o) {
var arr = [];
var FMT = function (s) {
if (typeof s = = ' object ' && s! = null) return jsontostr (s);
Return/^ (String|number) $/.test (typeof s)? "'" + S + "'": s;
}
for (var i in O) arr.push ("'" + i + "':" + FMT (O[i]));
Return ' {' + arr.join (', ') + '} ';
}

Get Browser version:

function GetExplorer () {
var osobject = "";
if (Navigator.userAgent.indexOf ("MSIE") > 0) {
return "IE";
}
if (Isfirefox = navigator.userAgent.indexOf ("Firefox") > 0) {
return "Firefox";
}
if (Issafari = navigator.userAgent.indexOf ("Safari") > 0) {
return "Safari";
}
if (Iscamino = navigator.userAgent.indexOf ("Camino") > 0) {
return "Camino";
}
if (Ismozilla = navigator.userAgent.indexOf ("gecko/") > 0) {
return "Gecko";
}
}

Some ways to manipulate dates:

function Formatjsontime (JSON) {
if (JSON! = null) {
var date = Convertjsondatetojsdateobject (JSON);
return GetTime (date);
}
else {
Return "";
}
}
function Formatjsondate (JSON) {
if (JSON! = null) {
var date = Convertjsondatetojsdateobject (JSON);
return GetDateTime (date);
}
else {
Return "";
}
}

function Formatjsonday (JSON) {
if (JSON! = null) {
var date = Convertjsondatetojsdateobject (JSON);
return GetDate (date);
}
else {
Return "";
}
}

/* JSON time converted to JS time object */
function Convertjsondatetojsdateobject (jsondate) {
var date = new Date (parseint ("Jsondate.replace" ("/date", "" "). Replace (")/"," "), 10));
return date;
}

/* Get date */
function GetDate (date) {
var year = Date.getfullyear ();
var month = Date.getmonth () + 1;
var day = Date.getdate ();
Return year + "-" + month + "-" + day;
}

/* Get date */
function Getdate_ (date) {
var year = Date.getfullyear ();
var month = Date.getmonth () + 1;
var day = Date.getdate ();
Return year + "/" + month + "/" + day;
}

/* Get Date Time */
function GetDateTime (date) {
var year = Date.getfullyear ();
var month = Date.getmonth () + 1;
var day = Date.getdate ();
var hh = date.gethours ();
var mm = Date.getminutes ();
var ss = Date.getseconds ();
Return year + "-" + month + "-" + Day + "" + hh + ":" + mm + ":" + SS;
}
function GetTime (date) {
var hh = date.gethours ();
var mm = Date.getminutes ();
var ss = Date.getseconds ();
return hh + ":" + mm + ":" + SS;
}

JS generates UUID

function Str4 () {
Return ((1 + math.random ()) * 0x10000) | 0). toString (+). substring (1);
}
function UUID () {
return STR4 () + STR4 () + "-" + STR4 () + "-" + STR4 () + "-" + STR4 () + "-" + STR4 () + STR4 () + STR4 ();
}

Get URL parameters
function Request (paras) {
var url = location.href;
var parastring = url.substring (Url.indexof ("?") + 1, url.length). Split ("&");
var paraobj = {}
for (i = 0; j = parastring[i]; i++) {
Paraobj[j.substring (0, j.indexof ("=")). toLowerCase ()] = j.substring (j.indexof ("=") + 1, j.length);
}
var returnvalue = Paraobj[paras.tolowercase ()];
if (typeof (returnvalue) = = "undefined") {
Return "";
} else {
Return returnvalue;
}
}

Array Increment indexof Property

function Checkindexof () {
if (! ARRAY.PROTOTYPE.INDEXOF) {
Array.prototype.indexOf = function (ELT/*, from*/) {
var len = this.length >>> 0;

var from = number (Arguments[1]) | | 0;
From = (From < 0)
? Math.ceil (from)
: Math.floor (from);
if (from < 0)
from + = Len;

for (; from < Len; from++) {
if (from in this &&
This[from] = = = ELT)
return from;
}
return-1;
};
}
}

Window Open

Screenh = Window.screen.availHeight;
Screenw = Window.screen.availWidth
function Openwin (Winurl, Cwidth, cheight) {
var height = Cheight = = null? 400:cheight;
var width = Cwidth = = null? 400:cwidth;
var pos_left = (screenw-width)/2;
var pos_top = (screenh-height)/2;
var Winid = STR4 ();
window.open (Winurl, Winid, ' height= ' + height + ', width= ' + width + ', top= ' + Pos_top + ', left= ' + Pos_left + ', Toolba R=no, Menubar=no, Scrollbars=yes, Resizable=yes,location=no, Status=no ');
}

JS some common methods