0.11.0/jQuery.headroom.min.js" integrity="sha256-ZX/yNShbjqsohH1k95liqY9Gd8uOiE1S4vZc+9KQ1K4=" crossorigin="anonymous"></script><!-- pkgdown --><link href="../pkgdown.css" rel="stylesheet"><script src="../pkgdown.js"></script><link href="../extra.css" rel="stylesheet"><meta property="og:title" content="Check a value for a range of empty conditions — isNullOrEmpty"><meta property="og:description" content="This function checks a value is not NULL, NA or an empty string."><!-- mathjax --><script src="https:/