Debugging Java Script
December 18, 2002 Timothy Prickett Morgan
While testing, I also saw something very strange. In some cases, I was able to key a single character into the first protected field after disabling that field. As far as I could tell, that only occurred with Windows Explorer 5.5.
This code is taken from my tip that was published in the article you referenced in your question . The call to the alert function causes a pop-up message to appear every time you check the shipTo checkbox.
After you install the script debugger, script errors will start the script debugger. The script debugger allows you to step through scripts and view script variables. Overall, it is a very useful debugging tool, but in some cases it can cause Internet Explorer to crash.
I was able to duplicate the problem–entering a single character in a disabled field-that you experienced. Changing the script to use the onblur event rather than the onchange event will fix the problem. The revised code looks like this example:
<td><input type="checkbox" name="shipTo" onblur="shipToChange();"></td>
Using alert and the script debugger can make that testing go more smoothly.
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