From the outside, it may look like the HTA loads an empty window frame and then waits for several seconds before showing its inteface elements.In fact, if run with elevated privileges, HTAs have access to every resource that administrators have access to.
If you need to build a proof of concept for a new program, consider an HTA. It used to come with a separate program HTAEdit in a single package, but recently these programs have been merged, and the new VBSEdit now handles HTAs too. Global variables in HTAs, on the other hand, require some extra attention. I use 3 letter prefixes for all variables in my VBScript scripts, e.g. Var for strings, objVar for objects, arrVar for arrays. In HTAs, however, I use those prefixes for local variables only, and use prefixes starting with gv for global variables, e.g. Var for strings, gvoVar for objects, gvaVar for arrays. ![]() Once the entire HTA is loaded, it executes the windowonload subroutine. ![]() And you dont have to retype the code, it can be downloaded here. Else For i 2 To intInput - 1 If intInput Mod i 0 Then document.getElementById( OutputResult ).innerHTML No, intInput is not a prime number. Exit Sub End If Next document.getElementById( OutputResult ).innerHTML Yes, intInput is a prime number. End If End Sub Sub ValidateInput( ) Dim objRE, strInput strInput document.getElementById( InputNumber ).value Set objRE New RegExp objRE.Global True objRE.Pattern d If objRE.Test( strInput ) Then strInput objRE.Replace( strInput, ) document.getElementById( InputNumber ).value strInput document.getElementById( OutputResult ).innerHTML Enter a number, and click the Check button to check if it is a prime number. End If If strInput Then document.getElementById( OutputResult ).innerHTML Enter a number, and click the Check button to check if it is a prime number. End If Set objRE Nothing End Sub Sub WindowOnLoad window.resizeTo 640, 480 document.title document.title, Version MyFirstHTA.Version End Sub script body p input type text id InputNumber onchange ValidateInput onkeyup ValidateInput nbsp; input type button value Check onclick CheckIfPrime p p nbsp; p p id OutputResult Enter a number, and click the Check button to find out if it is a prime number. Specifying a DocType (line 1) is optional, but it may help getting more predictable results when running the HTA in different Windows versions. 2 tech universal usb sim card reader driverUnlike true web pages, you dont have to include a tag here, you can set it later, on-the-fly, which is demonstrated in the WindowOnLoad subroutine, on line 61. Copy and paste it from this page or from any other HTA and use Microsofts HTML Applications Reference to add or modify its properties. After checking if the number is a prime number, the result has to be presented (lines 30, 34 38). It is triggered when the content of the textbox (line 67, ID InputNumber ) is changed ( onchange event handler, i.e. The code in line 44 reads the input just like the CheckIfPrime( ) does. The subroutine then uses a regular expression to remove everything but numbers (line 49). The code in line 50 writes the corrected input back into the textbox. The code in lines 51 and 54 changes the output text from result to description. Thirukkural word for word meaningIn our demo it resizes the HTAs window (line 60) and sets the HTAs title (line 61).
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