Memory issue on IE11

Krittanat A

created 5 years ago

I have to render Survey multiple times without refresh the page and,
I found that memory consumption keep increasing when Survey are created.

Is there any function like destroy() to reclaim memory ?

Show previous comments (2)

Serge T 5 years ago

Hello,

Can you share - what framework are you using and the JSON to reproduce and investigate the issue on our side?

Thanks, Serge
SurveyJS Team

Krittanat A 5 years ago

I'm using jQuery version.
I can tell the JSON is generated dynamically with around 15 pages matrixdropdown with 5-10 question each page.
All question is around 100-140 question.

Example

JavaScript
{ pages: [ { questions : [
{
   "type":"matrixdropdown",
   "name":"id",
   "title":"Title",
   "titleLocation":"hidden",
   "showHeader":false,
   "columns":[
      {
         "name":"Static text",
         "title":"Static text",
         "expression":"\"This is static text\"",
         "cellType":"expression"
      },
      {
         "name":"Answer",
         "title":"Answer",
         "isRequired":true
      },
      {
         "name":"comments",
         "title":"comments",
         "cellType":"text"
      },
      {
         "name":"hiddenField",
         "title":" ",
         "cellType":"text",
         "visibleIf":"1=2"
      }
   ],
   "rows":[
      {
         "value":"key",
         "text":"My Text"
      }
   ],
   "choices":[
      "Option1",
      "Option2"
   ]
}
], name: "pageName"}] }

Thanks

Andrew Telnov 5 years ago

Hello,
Could you please attach your JavaScript code and JSON. The JSON that you gave us, could not help us a lot to reproduce the issue.

Thank you,
Andrew
SurveyJS Team

Krittanat A 5 years ago

I attached the html. Please try hitting delete and create button and see the memory in task manager.

SurveyTest.html

Serge T 5 years ago

Thank you for the provided sample. I've reproduced the issue. We've started to work on it. I'll updated this thread as soon as we'll get any results.

Serge,
SurveyJS Team

Answers approved by surveyjs Support

Serge T

created 5 years ago

Hello,

I've fixed the issue via the https://github.com/surveyjs/survey-library/commit/ed7234d94f2a7c7db1a5e251342b2c2fd3801650 commit. Fix will be available in the nearest update.

Instead of

JavaScript
function cancelChecklist() {
    SURVEY_INSTANCE.doComplete();
    SURVEY_INSTANCE = null;
    jQuery("#surveyElement").html("");
}

You need to use the following code:

JavaScript
function cancelChecklist() {
    SURVEY_INSTANCE.doComplete();
    SURVEY_INSTANCE.dispose();
    SURVEY_INSTANCE = null;
}

Thanks, Serge
SurveyJS Team

Comments (3)

Krittanat A 5 years ago

Thanks for your quick fix and response.
Can you tell me when is your next release date?

Andrew Telnov 5 years ago

Hello,
We are going to release v1.7.4 tomorrow or after tomorrow.

Thank you,
Andrew
SurveyJS Team

Krittanat A 5 years ago

Thank you.

Memory issue on IE11

Answers approved by surveyjs Support

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