HTML JS on iOS
lazarus / 38-Networking and Web Programming

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epergola · 2020-12-15 15:35

I hope ther is someone expert on this topic.
I have this code. It works fine in Android Chrome. In iOS resp shows
"undefined".

async function submitfuncR(resp,saveterminal){
   alert(resp);   THIS SHOWS "UNDEFINED" in iOS
   ............
}

async function submitfunc(submitfuncR) {
    var xhr = new XMLHttpRequest;
    xhr.onreadystatechange=function(){
      if (xhr.readyState === 4 && (xhr.status ===200 ) {
         ...........
        resp=xhr.response;
        submitfuncR(resp,saveterminal);
      }
    }
    xhr.open("POST",_serverpar,true);
    xhr.send("login;");
    return false;
}

It is called in the body section like this: <button class ="nobutton"
type="button" onclick="submitfunc(submitfuncR)">Enviar</button>

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lainz · 2020-12-15 23:51

Try evaluating resp = xhr.response, if is undefined or not before you
send it to submitfuncR

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epergola · 2020-12-16 19:02

Thanks Lainz.
Of course I did. It does show xhr.response just before the call to
submitR, but it shows undefined in the first line of that function. I
repat shows ok in Android Chrome, but it fails on iOS Chrome.

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lainz · 2020-12-17 01:28

Cross plataform bugs   even in the web...

What if you make a real copy of the response? Or just the data you
need to see and pass that?

Edit: I said that because I don't know the data type of the response.

Also I noticed that you forget to put var before resp assignment. Not
sure if that does something on iOS. Like by default strict mode or
something...