Archives for November 2005

VBScript Array Length

November 21, 2005 by Tom 12 Comments

Apparently there is no direct method to determine the length of an array in VBScript. The best way I could find is to use UBound(ArrayName). This will return the upper limit of the array. Unfortunately, it doesn’t account for empty items in the array. In the example below Length will be equal to 10, not 1.

Dim NewArray(10) NewArray(0) = "Apple" Length = UBound(NewArray) 'Length is equal to 10, not 1

Here is a good link to VBScript Array functions.

http://www.shocknet.org.uk/defpage.asp?pageID=30

If you know of a better way to determine the length, please let me know.

Javascript InStr function

November 15, 2005 by Tom

Is there a function in Javascript that is the same as VBScript’s instr? Yes! It’s string.indexOf

For info on how to use it, check out DevGuru’s page on IndexOf

Replacing Checkboxes and Radio Button’s Programmically with Javascript

November 14, 2005 by Tom 3 Comments

There is a great article and javascript on CodeProject.com. The code was originally written by BrainError.

I had to add support for labels, however. If you had a label like this:
<label for="CheckBoxID"></label>

it wouldn’t update the image if you clicked it. I added the following to the js file:

In function replaceChecks, I added one line: inputs[i].onclick = new Function(‘imgChange(‘+i+’)’);

Here’s the relevant section of code:

//set image if(!inputs[i].disabled) { img.onclick = new Function('checkChange('+i+')'); inputs[i].onclick = new Function('imgChange('+i+')'); }

I also had to add a separate function here:

//change the image if the checkbox is changed. function imgChange(i) {

if(inputs[i].checked) { document.getElementById('checkImage'+i).src=imgCheckboxTrue; } else { document.getElementById('checkImage'+i).src=imgCheckboxFalse; } }