How to ensure that negative number can't be entered for text entry?

No need of custom code here, as this feature is present in qualtrics. In text entry question, select validation type as "Content validation", content type as "Number" and under numeric format put 0 as min and 9 as max

How to ensure that negative number can't be entered for text entry?This doesn't quite work because this problem is embedded within a trickier problem where I want to display 6 entry forms side-by-side for text entry. This code gets be very close except for being able enter minus signs:

Qualtrics.SurveyEngine.addOnReady(function()

{

/*Place your JavaScript here to run when the page is fully displayed*/



var that = this.questionId;

  jQuery("#"+this.questionId+" td:not(.ControlContainer)").hide();

jQuery("#"+this.questionId+" .InputText").css("max-width","2em");

jQuery("#"+this.questionId+" .InputText").attr("maxlength", "1");

  jQuery("$").insertBefore(jQuery("#"+that+" .InputText:eq(0)"));

  jQuery("#"+that+" .InputText:eq(1)").insertAfter(jQuery("#"+that+" .InputText:eq(0)"));

jQuery("#"+that+" .InputText:eq(2)").insertAfter(jQuery("#"+that+" .InputText:eq(1)"));

jQuery("#"+that+" .InputText:eq(3)").insertAfter(jQuery("#"+that+" .InputText:eq(2)"));

jQuery("#"+that+" .InputText:eq(4)").insertAfter(jQuery("#"+that+" .InputText:eq(3)"));

jQuery("#"+that+" .InputText:eq(5)").insertAfter(jQuery("#"+that+" .InputText:eq(4)"));

  jQuery(",").insertAfter(jQuery("#"+that+" .InputText:eq(2)"));

jQuery("#"+this.questionId+" .InputText").attr({'type':'number','min':'0', 'max':'9'});