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

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;
}
}

I did an inventory of the existing javascript auto-complete controls. Here it is:

• http://claudio.cicali.org/papers/13/flexac
• http://momche.net/publish/article.php?page=acdropdown
  Works very well. Seems to be semi-compatible with Safari on Mac
• eBusiness Applications Web ComboBox V3 Paid component.
• WICK – Web Input Completion Kit an open source version of this idea.