B4J Question [BANano]: [SOLVED] How to transverse elements by name and return attributes?

[Mashiane]

Hi there

I'm trying to transverse some form elements by name, the example here gets all the inputs by a particular name e.g. category. This returns the two expected elements. In the future i'd like to serialize these without them having to be inside a 'form' tag.

Issues: One of the elements is checked, the returned value is null however, the attribute property returns the right id. Is there a way to solve this?

Sub GetMember1 As Boolean
    Dim elID As String = "category"
    Dim el As BANanoElement = BANano.GetElement($"input[name='${elID}']"$)
    Dim els() As BANanoElement = el.Siblings("")
    For Each radio As BANanoElement In els
        Log(radio)
        Log("*** type")
        Log(radio.GetAttr("type"))
        Log("*** checked")
        Log(radio.GetChecked)
        Log("*** id")
        Log(radio.GetAttr("id"))
        Log("*** value")
        Log(radio.GetValue)
        Log("*** checked attr")
        Log(radio.GetAttr("checked"))
    Next

Whilst the elements are read, I cant seem to get some of the attribute values..

Thanks..

 

[alwaysbusy]

Impossible to help without:

1. seeing how it is created

2. how the final html tag looks like

3. how the transpiled javascript code looks like

In short, a small project that can replicate the issues. I use these methods all the time without issues so something is particular in your case.

 

[Mashiane]

Thanks, I have attached an example..

I see where my issue is now. The .GetElement output is actually 2 found radio items items, this is correct as per depicted by el.Length = 2. Running el.First returns the first element in that search, the correct input element. I saw there is an el.Last method also but what if I had more than 2 elements, how do I loop them and read each? That is where I'm stuck.

Dim elID As String = "category"
    Dim el As BANanoElement = BANano.GetElement($"input[name='${elID}']"$)
    Log(el.Length)
    Log(el.First)
    Log(el.Children(""))
    Log(el.siblings(""))

Thanks.

 

[alwaysbusy]

Although it could be done with a series of For loops, I created a new GetElements() method that returns an array of BANanoElements which simplifies it a lot. Has been added to BANano v2.09, see https://www.b4x.com/android/forum/t...rogressive-web-app-library.99740/#post-627764