Coding Knowledge

Get screen width and height by using Javascript: var screenW = 800, screenH = 600; if (parseInt(navigator.appVersion)>3) { screenW = screen.width; screenH = screen.height; } else if (navigator.appName == "Netscape" && parseInt(navigator.appVersion)== 3 && navigator.javaEnabled()) { var jToolkit = java.awt.Toolkit.getDefaultToolkit(); var jScreenSize = jToolkit.getScreenSize(); screenW = jScreenSize.width; screenH = jScreenSize.height; }

Your website contains a lot of DropDownList in several pages. To save times, you can put the following code into the App_Code and call when needed. public void SetDataToDropDown(DropDownList drdn, int iValue) { for (int i = 0; i { if (drdn.Items[i].Value == iValue.ToString()) { drdn.SelectedIndex = i; break; } } }

Sometimes, you want to get the parameter value in query string by using Javascript. In this case, you can use this function to do that: function GetParamValue(strParamName) { var strReturn = ""; var strHref = window.location.href; if ( strHref.indexOf("?") > -1 ) { var strQueryString = strHref.substr(strHref.indexOf("?")).toLowerCase(); var aQueryString = strQueryString.split("&"); for ( var iParam = 0; iParam { if (aQueryString[iParam].indexOf(strParamName.toLowerCase() + "=") > -1 ) { var aParam = aQueryString[iParam].split("="); strReturn = aParam[1]; break; } } } return unescape(strReturn); } For example, if your URL like that: www.example.com\ProductDetail.aspx?ProductID=3 You can call: var strProductID = GetParamValue("ProductID");