replace

by dshilkret

HTML

<div class="right-div" width="50%" height="512" >
                    <a href="https://sdev2.sharepoint.com/:x:/r/_layouts/15/WopiFrame.aspx?sourcedoc=%7BF5CBC55F-C6F0-4751-98AB-31F9162F29CD%7D&file=clauses.xlsx&action=embedview" target="docFrame">Test Clauses</a>
                    <p id="demo">https://sdev2.sharepoint.com/_layouts/15/WopiFrame.aspx?sourcedoc=%7BF5CBC55F-C6F0-4751-98AB-31F9162F29CD%7D&file=clauses.xlsx&action=default</p>

                    <button onclick="myFunction()">Try it</button>

                    <script>
                    function myFunction() {
                        var str = document.getElementById("demo").innerHTML; 
                        var res = str.replace("https://sdev2.sharepoint.com/", "https://sdev2.sharepoint.com/:x:/r/");
                        document.getElementById("demo").innerHTML = res;
                    }
                    </script>
                <iframe name="docFrame" frameborder="0" scrolling="no" src=""></iframe>
                </div>