VBA Scraping across multiple webpages - excel

Question

So, I have the following code to scrap the data from a website and it's working without any problem.
My "issue" now it's that I need to run the code trought multiple webpages because the website I'm scraping has a pagination script.
Eg: One single page has 48 records, but in most of the cases the page has 200+ records but they are sub-divided on 3/4 pages.
My code:
Public Sub Roupa()
Dim data As Object, i As Long, html As HTMLDocument, r As Long, c As Long, item As Object, div As Object
Set html = New HTMLDocument '<== VBE > Tools > References > Microsoft HTML Object Library
With CreateObject("MSXML2.XMLHTTP")
.Open "GET", "https://www.worten.pt/grandes-eletrodomesticos/maquinas-de-roupa/maquinas-de-roupa-ver-todos-marca-BALAY-e-BOSCH-e-SIEMENS?per_page=100", False
.send
html.body.innerHTML = .responseText
End With
Set data = html.getElementsByClassName("w-product__content")
For Each item In data
r = r + 1: c = 1
For Each div In item.getElementsByTagName("div")
With ThisWorkbook.Worksheets("Roupa")
.Cells(r, c) = div.innerText
End With
c = c + 1
Next
Next
Sheets("Roupa").Range("A:A,C:C,F:F,G:G,H:H,I:I").EntireColumn.Delete
End Sub
UPDATE
I've tried adding this For n = 1 To 2 before the With, it works but I need to know the exact number of pages so that's not so helpful..

Answer 1

Work out how many pages there are by dividing the result count by the results per page. Then do a loop concatenating the appropriate page number onto the url
Option Explicit
Public Sub Roupa()
Dim data As Object, i As Long, html As HTMLDocument, r As Long, c As Long, item As Object, div As Object
Set html = New HTMLDocument '<== VBE > Tools > References > Microsoft HTML Object Library
Const RESULTS_PER_PAGE As Long = 48
Const START_URL As String = "https://www.worten.pt/grandes-eletrodomesticos/maquinas-de-roupa/maquinas-de-roupa-ver-todos-marca-BALAY-e-BOSCH-e-SIEMENS?per_page=" & RESULTS_PER_PAGE & "&page=1"
With CreateObject("MSXML2.XMLHTTP")
.Open "GET", START_URL, False
.setRequestHeader "User-Agent", "Mozilla/5.0"
.send
html.body.innerHTML = .responseText
Dim numPages As Long, numResults As Long, arr() As String
arr = Split(html.querySelector(".w-filters__element").innerText, Chr$(32))
numResults = arr(UBound(arr))
numPages = 1
If numResults > RESULTS_PER_PAGE Then
numPages = Application.RoundUp(numResults / RESULTS_PER_PAGE, 0)
End If
For i = 1 To numPages
If i > 1 Then
.Open "GET", Replace$("https://www.worten.pt/grandes-eletrodomesticos/maquinas-de-roupa/maquinas-de-roupa-ver-todos-marca-BALAY-e-BOSCH-e-SIEMENS?per_page=" & RESULTS_PER_PAGE & "&page=1", "page=1", "page=" & i), False
.setRequestHeader "User-Agent", "Mozilla/5.0"
.send
html.body.innerHTML = .responseText
End If
Set data = html.getElementsByClassName("w-product__content")
For Each item In data
r = r + 1: c = 1
For Each div In item.getElementsByTagName("div")
With ThisWorkbook.Worksheets("Roupa")
.Cells(r, c) = div.innerText
End With
c = c + 1
Next
Next
Next
End With
Sheets("Roupa").Range("A:A,C:C,F:F,G:G,H:H,I:I").EntireColumn.Delete
End Sub
Thinking about about what #AhmedAu said, if page has loaded properly, looks like a good way to also get page count is to simply use:
numPages = html.querySelectorAll("[data-page]").Length