Mobile: Remove Local Storage Key - Fails ?

[andyhill]

      try
        JSInterface.JSCallGlobal('localStorage.removeItem', ['_K1_']);
        JSInterface.JSCallGlobal('localStorage.removeItem', ['_K2_']);
      except
      end;

      try
        Button.JSInterface.JSCallGlobal('localStorage.removeItem', ['_K1_']);
        Button.JSInterface.JSCallGlobal('localStorage.removeItem', ['_K2_']);
      except
      end;

Can someone please advise why RemoveItem fails to remove ? Thanks in advance

[Sherzod]

Hello Andy, 

On what device, what browser?

[andyhill]

Desktop Windows Chrome

[Sherzod]

9 minutes ago, andyhill said:

Desktop Windows Chrome

Why did you mark in the title of the post as mobile?

[andyhill]

Because it is mobile (touch) on desktop /m

[Sherzod]

22 minutes ago, andyhill said:

Because it is mobile (touch) on desktop /m

Okay.

2 hours ago, andyhill said:

Can someone please advise why RemoveItem fails to remove ?

What exactly? Not removed?

[Abaksoft]

3 hours ago, andyhill said:

      try
        JSInterface.JSCallGlobal('localStorage.removeItem', ['_K1_']);
        JSInterface.JSCallGlobal('localStorage.removeItem', ['_K2_']);
      except
      end;

      try
        Button.JSInterface.JSCallGlobal('localStorage.removeItem', ['_K1_']);
        Button.JSInterface.JSCallGlobal('localStorage.removeItem', ['_K2_']);
      except
      end;

Can someone please advise why RemoveItem fails to remove ? Thanks in advance

Hello,

This can help you:

http://forums.unigui.com/index.php?/topic/12306-how-can-i-access-local-storage/&do=findComment&comment=65734

 

Did you, first set your key _K1_  ?

[andyhill]

Key set and easily seen in chrome development tools, already viewed all posts on localstorage.

Mobile (touch) fails to remove ???

 

[andyhill]

I am running this code in a Login Form.

[Sherzod]

13 hours ago, andyhill said:

try
        JSInterface.JSCallGlobal('localStorage.removeItem', ['_K1_']);
        JSInterface.JSCallGlobal('localStorage.removeItem', ['_K2_']);
      except
      end;

      try
        Button.JSInterface.JSCallGlobal('localStorage.removeItem', ['_K1_']);
        Button.JSInterface.JSCallGlobal('localStorage.removeItem', ['_K2_']);
      except
      end;

In what place, event, do you use this piece of code?

[andyhill]

UnimLoginFormAjaxEvent

localStorage.setItem WORKS

localStorage.removeItem DOES NOT WORK

[andyhill]

Exhaustive testing shows

TfLogin = class(TUnimLoginForm) ALL localStorage.setItem and localStorage.removeItem FAILS

TfMain = class(TUnimForm)           ALL localStorage.setItem and localStorage.removeItem APPEARS TO WORK

[Sherzod]

Hello,

Your case is not clear:

On 7/24/2023 at 12:33 AM, andyhill said:

UnimLoginFormAjaxEvent

This event is called many times, and it is not good practice to use it without specifying the EventName parameter.

[andyhill]

Sherzod, the event name was left out in my post for clarity.

It is normal programming that only has issues (not working) with Touch Login Form.

[Abaksoft]

11 hours ago, andyhill said:

it is normal programming that only has issues (not working) with Touch Login Form.

I tested  with Touch Login Form and works fine !

procedure TfrmLogin.UnimButton1Click(Sender: TObject);
var st:string;
begin
  st:=UnimEdit1.Text;
  UnimButton1.JSInterface.JSCallGlobal('localStorage.setItem', ['K1', st] );   // Key , Value  (always string)
end;

procedure TfrmLogin.UnimButton2Click(Sender: TObject);
begin
  with UnimEdit2.JSInterface do
    JSCall('setValue', [jsstatement('localStorage.getItem("K1")')]);      // important : Key must be Quoted " "
end;

procedure TfrmLogin.UnimButton3Click(Sender: TObject);
begin
  UnimButton3.JSInterface.JSCallGlobal('localStorage.removeItem', ['K1']);
end;

 

- Unigui Build 1568

- Chrome Version 115.0.5790.102 (Build officiel) (64 bits)

 

See attached  LoginMobile.zip 

LoginMobile.zip

[andyhill]

Thank you but I am not actually using a Button or an Editor, I am doing it via a FORM AjaxEvent inside a mLoginForm.

[Abaksoft]

1 hour ago, andyhill said:

Thank you but I am not actually using a Button or an Editor, I am doing it via a FORM AjaxEvent inside a mLoginForm.

Can you send a sample (empty new mobile project) with this AjaxEvent ?

[andyhill]

I added the ajax code to your skeleton sample and it worked so it obviously has to do with timing issues.

 I will need time to strip my project down and identify the timing/synchronisation problems - thank you for your input.

[Abaksoft]

34 minutes ago, andyhill said:

I added the ajax code to your skeleton sample and it worked so it obviously has to do with timing issues.

 I will need time to strip my project down and identify the timing/synchronisation problems - thank you for your input.

Good to hear that

Thx