inputField(i)
    {
        let self = this;
        let textarea = self.JSON_DATA.main_object.exercises[i].textarea;

        let div = $("<div/>", {
            class: "form-group row"
        });

        let word;
        for (let a = 0; a < textarea.length; a++)
        {
            if (textarea[a].checked == "true")
            {
                word = $("<input/>", {
                    class: 'form-control col-2 my-1 mx-1'
                }).on('input', function(){
                    //Timer start
                   self.tm.start()
                    if ($(this).val() == textarea[a].word)
                     {
                        $(this).nextAll('input').first().focus();
                        $(this).addClass('btn-success').attr("disabled", true)
                     }});
            } else {
                word = $("<span/>", {
                    class: 'col-form-label mx-1'
                    }).html(textarea[a].word);
            }
                div.append(word);
        }
                    return div;
    }