B4J Question EvalWithResult - multiple results

jhagerup · Aug 23, 2015

I am trying to get the id's for all textarea in a table.

B4X:

Dim f As Future
f = ws.EvalWithResult("return $(arguments[0]).attr(""id"")", Array As Object("textarea"))
Log(f.Value)

returns the first id correct, but I can't figure out how to get all id's

B4X:

Dim f2 As Future
ws.Eval("$(arguments[0]).each(function(){alert( $(this).attr(""id""))})", Array As Object("textarea"))

shows alerts with the correct id's, but when i try with

B4X:

Dim f3 As Future
f3 = ws.EvalWithResult("return $(arguments[0]).each(function(){return $(this).attr(""id"")})", Array As Object("textarea"))

I get a "strange" map with unrecognizable data like:
{11={}, 12={}, 13={}, prevObject={0={location={search=, hostname=localhost, protocol=http:.....

Please help

rwblinn · Aug 23, 2015

Hi,

try following

JavaScript Function in Index.html Script section

B4X:

function getids(){
  var ids = [];
  var elements = document.getElementsByTagName("textarea");
  for(var i=0;i<elements.length;i++){
    ids.push(elements[i].id)
  };
  return ids;
};

B4J Code (uses Websockets)
Dim f As Future = ws.RunFunctionWithResult("getids", Null)
Dim l As List = f.value
For i = 0 To l.Size - 1
Log(l.Get(i))
Next

Example project attached. The getids function can be extended by using a parameter of the element to get id's from.

jhagerup · Aug 24, 2015

Thanks. Just what I needed.
Sometimes jQuery is "a bridge too far" ;-)

B4J Question EvalWithResult - multiple results

jhagerup

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rwblinn

Well-Known Member

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jhagerup

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B4J Question EvalWithResult - multiple results

jhagerup

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rwblinn

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jhagerup

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