Automate the Onclick screen popup - powershell

Question

Using IE I have automated a site but now after everything, I got stuck with a form which throws a dialogue box "Message from Webpage" Ok or Cancel.
Dialogue Box Image
Brower's HTML inscpect :
<div class="formbuttons">
<input name="Deactivate" class="formsubmit deactivate" id="ButtonDeactivate"
style="width: 160px;" onclick="return confirm('Are you sure you want to
deactivate the feature?');WebForm_DoPostBackWithOptions(new WebForm_PostBackOptions(
"ctl00$ContentPlaceBody$ButtonDeactivate","", true, "
", "", false, false))" type="submit" value="Deactivate">
</div>
The methods I have tried :
1. By removing the onclick from html but it didn't help though regular expression is actually removing it
[String] $body = "onclick=.*feature....."
$ie.Document.body.innerHTML -replace "$body", ""
$deactivate=$ie.document.getElementById("ButtonDeactivate")
$deactivate.Click();
2. By adding few statements as mentioned here (Automating IE confirmation prompt with Powershell)
$ie.document.forms | Select -First 1 | % { $_.submit() }
My only motive is to click on the OK popup button.
Thanks for the help in advance.

Answer 1

Try to query the Outer HTML property of the item to get the HTML code. Then all you have to do is replace the "confirm (*)" with "". After that you can set it back into the script and then click it.
$Script = $IE.document.getElementsByTagName("script").item(#----------Whatever Number it is)
$Script.outerHTML = $Script.outerHTML | % {if ($_ -like "return confirm*") {"return true;"} else {$_}}
$autotransbtn.Click()
Reference:
(1) Automating JavaScript confirmation prompt in IE using PowerShell
(2) internet explorer - Automating IE confirmation prompt with Powershell