create an array for unanswered survey question items

I have a SharePoint survey and I need to create an array of survey questions that have been left unanswered using JS.

Then I need to create an unanswered array index tracker where the unansweredQuestionItem = {"url":"<<question url>>", "questionId":"", "frequency":"<<number of times displayed>>", "isQuestionAnswered":"<<default false>>"}

Can anyone help point me in the right direction with this??