Extracting Content from Webpage with ParsedHtml - powershell

Question

I've been trying to use the invoke-Webrequest and the "ParsedHtml.getElements"
ParsedHtml.getElementsByTagName("div") | Where{ $_.className -eq 'pricingContainer-priceContainer' } ).innerText
to try to get the value $8.29 but using it on the below code produces no result. What am I doing wrong?
<div class="pricingContainer pricingContainer--grid u-ngFade noCenterTag" ng-class="::{'noCenterTag': !showCenterTag}" ng-if="::featuresEnabled">
<!-- ngIf: ::(product.IsOnSpecial && !product.HideWasSavedPrice) -->
<div class="pricingContainer-priceContainer">
<span class="pricingContainer-priceAmount" ng-class="::specialClass">$8.29</span>
<!-- ngIf: ::product.CupPrice --><span ng-if="::product.CupPrice" class="pricingContainer-priceCup">
$5.19 / 100G
</span><!-- end ngIf: ::product.CupPrice -->
</div>
</div>

Answer 1

By replacing className by class:
($html.getElementsByTagName("span") | Where{ $_.class -eq 'pricingContainer-priceCup' }).innerText
or
($html.getElementsByTagName("div") | Where{ $_.class -eq 'pricingContainer-priceContainer' }).innerText
An example:
$Site = "http://example.com/index.html"
$all = Invoke-WebRequest -URI $Site
# $all contains all informations of the page
$html = [xml]$all.Content
#[xml] is a cast to convert code to xml
$html.getElementsByTagName("div")
You can use automation with IE. You choose a div witch contains the Card and you can get the innerHTML like this:
$ie = New-Object -ComObject "InternetExplorer.Application"
$ie.Navigate("http://www.example.com/index.html")
$ie.Visible = $true
while ($ie.Busy -eq $true) { Start-Sleep -Milliseconds 2000; }
$html= $ie.Document.body.getElementsByTagName('div') | Where-Object {$_.className -eq "cardList-cards cardList-isotopeContainer"}
$lines = $html.innerHTML.split("`n")
$prices = $lines | Where-Object { $_ -Match '<span class=\"pricingContainer\-priceAmount\"' }
$prices = $prices | foreach { [regex]::matches($_, '>([0-9.$]*)</span>').Groups[1].Value }
echo $prices

Answer 2

Worked this bad boy out by opening the webpage , wait for correct html to load over the dynamic html then dumps to a txt file to read and search.
$path = "c:\sourcecode.txt"
$ie = New-Object -com InternetExplorer.Application
$ie.visible=$true
$ie.navigate("blahblahblahblah insert webpage here")
while($ie.ReadyState -ne 4) {start-sleep -s 10}
$ie.Document.body.outerHTML | Out-File -FilePath $path
$pricebf = select-string -path $path -pattern "pricingContainer-priceAmount" | select-object -First 1 | select Line
$Descriptionbf = select-string -path $path -pattern "canOpenDetail --><a title=" | select-object -First 1 | select Line