Add External Link Arrow to Relevant Links

addExtLinkArrow.js

const validUrls = []; // to add
document.addEventListener("DOMContentLoaded", function(event) {
  setTimeout(() => {
    var anchors = document.getElementsByTagName("a");

    for (var i=0; i<anchors.length; i++) { 
      if (!anchors[i].href.includes(".gov") &&                   //ignore .gov links
          !anchors[i].href.includes(".mil") &&                   //ignore .mil links
          !anchors[i].href.includes("javascript:void(0)") &&     //ignore blanks
          !anchors[i].href.includes("mailto:") &&                //ignore email links
          !anchors[i].href.includes("tel:") &&                   //ignore telephone links
          !anchors[i].href.includes("livepreview.")              //ignore Salesforce preview pane
         ) { 
          // font awesome
          // anchors[i].innerHTML += ' <i class="fas fa-external-link-alt" aria-hidden="true"></i>'; 
          // USWDS 
        anchors[i].innerHTML += '<svg class="usa-icon" aria-hidden="true" focusable="false" role="img"><use xlink:href="/assets/img/sprite.svg#launch"></use></svg>';
      }
    }
  }, 3000);
});