Delete, Backspace, Tab and Arrow keys are not working in Firefox when applying validation.

To get this work in Firefox.

<input id="Destination" value="" placeholder="Destination">

$('#Destination').on('keypress', function (e) {

    var regex = new RegExp("^[a-zA-Z0-9_ \b]+$");
    var key = String.fromCharCode(!e.charCode ? e.which : e.charCode);   
    var keystobepassedout="ArrowLeftArrowRightDeleteBackspaceTab";
      return true;
    if (!regex.test(key)) {
        return false;


Try it

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