title: Uncaught TypeError: Cannot read property '1' of null(…) in a JavaScript function
body: <p>This method is part of a module; And despite the error...</p>
  
  <p><code>Uncaught TypeError: Cannot read property '1' of null(…)</code> </p>
  
  <p>works to a small degree, however it appears to have blocked an additional method on the module.</p>
  
  <p>This is a <a href="https://jsfiddle.net/718BkQns/1xomL42r/7/" rel="noreferrer">fiddle</a> which contains the whole module.</p>
  
  <pre class="lang-js prettyprint-override"><code>searchURL: function() {
    function insertAfter(newNode, referenceNode) {
      referenceNode.parentNode.insertBefore(newNode, referenceNode.nextSibling);
    }
    var link, url, parser, newPathName = '',
      newstr = '',
      doc = document,
      avon_rep_container = doc.getElementById('avon_rep_container'),
      avon_rep_container_id,
      avon_rep_container_links,
      avon_rep_container_images,
      documentTableWrapper,
      docBodyFirstChild,
      full_width_container_1 = doc.getElementsByClassName('full-width-container')[1],
      full_width_img_class_el = doc.getElementsByClassName('full-width-img')[0];
    if (!avon_rep_container) {
      avon_rep_container = doc.createElement('div');
      avon_rep_container.setAttribute('id', 'avon_rep_container');
      avon_rep_container.className = 'container-avon-representative-news';
      avon_rep_container_links = avon_rep_container.getElementsByTagName('a');
      avon_rep_container_id = doc.getElementById('avon_rep_container');
      docBodyFirstChild = doc.body.firstChild;
      documentTableWrapper = doc.getElementsByClassName('marginfix')[0];
      avon_rep_container.appendChild(documentTableWrapper);
      doc.body.appendChild(avon_rep_container);
      full_width_container_1.removeChild(full_width_container_1.getElementsByTagName('table')[0]);
      full_width_img_class_el.removeAttribute('style');
    } else {
      avon_rep_container_links = doc.getElementById('avon_rep_container').getElementsByTagName('a');
    }
    avon_rep_container_images = avon_rep_container.getElementsByTagName('img');
    for (var i = 0; i &lt; avon_rep_container_images.length; i++) {
      var images = avon_rep_container_images[i];
      images.src = '/dam/avon-us/landing-pages/rep-news/' + images.src.split('/').pop();
      if (avon_rep_container_images[i].width == "538") {
        avon_rep_container_images[i].style.width = "538px";
      }
      if (avon_rep_container_images[i].width == "258") {
        avon_rep_container_images[i].style.width = "258px";
      }
      avon_rep_container_images[i].style.width = 'inherit';
      avon_rep_container_images[i].style.margin = 'auto';
    }
    //for (var i = 0, len = arguments.length; i &lt; len; i++) { // Using a for loop to allow unlimited arguments to be passed in
    //instead collect all necessary urls
    url = getURL(arguments); //[i]); // We are calling the publicApi.getURL() method and passing the looped argument from above
    for (var j = 0, jlen = avon_rep_container_links.length; j &lt; jlen; j++) { // This loop goes over the whole documents links...
      link = avon_rep_container_links[j];
      var domain = link.href.match(/(https?:\/\/.+?)\//)[1];
      if ((url.indexOf(domain) !== -1) &amp;&amp; (!link.href.match(/\.(pdf)/gi))) { // //...and we are checking each argument passed in to see if it matches the object value stored in the getURL function e.g. like a switch statement..
        parser = document.createElement('a'); //...if so we are essentially adding a blank tag to all the documents in the document
        parser.href = link.href;
        link.setAttribute('target', '_self');
        newPathName = parser.pathname;
        console.log(domain);
        if (newPathName.search(/Executive|District|Division|National/) != -1) { // Added check for these strings for SMO page
          newPathName = newPathName.split('/').pop();
          newstr = newPathName;
        } else {
          newstr = newPathName;
        }
        link.href = newstr;
      } else {
        link.setAttribute('target', '_blank');
      }
    }
    //}
  }
  </code></pre>
  
  <p>Can one explain what the error means in context to my Module, can't seem to understand it.</p>
  
  <p>Thanks any help will be appreciated!</p>
  
  <p><strong>Update</strong></p>
  
  <p>This is where the error is occurring:</p>
  
  <pre><code>var domain=link.href.match(/(https?:\/\/.+?)\//)[1];
  </code></pre>