<script> //Save parameter value in variable var keyword = "" var url_string = window.location.href; var url = new URL(url_string); var keyword = url.searchParams.get("keyword"); //console.log(keyword); //Replace title if(keyword !== null && keyword !== '') { document.title = keyword; }else{ console.log("noParamNoTitle"); } //Replace the first H1 if(keyword !== null && keyword !== '') { document.getElementsByTagName("h1")[0].innerText = keyword; }else{ console.log("noParamNoHeading"); } </script>