web - How can I have refresh page link/button inside my JavaScript code? -

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basically have following code checks user input , gives output accordingly:

<script>     function checkuserinput()      {         var userinput = document.getelementbyid("textinput").value;         var stringtocheckagainst = random_images_array[num].split('.');         if (userinput.touppercase() == stringtocheckagainst[0].touppercase())                  {             document.getelementbyid("row1").innerhtml="<p>" + txt.fontsize(5) + "</p>";document.close();         }          else          {              //user has inputted incorrect string             document.getelementbyid("row1").innerhtml="<p>" + txt1.fontsize(5) + "</p>";document.close();         }     } </script>

however problem is, in case user response not correct , programme displays “incorrect message”, need show refresh or reset button or text clicking on link user can again refresh page , gets new challenge.

function checkuserinput() {     var userinput = document.getelementbyid("textinput").value;     var stringtocheckagainst = random_images_array[num].split('.');      if (userinput.touppercase() == stringtocheckagainst[0].touppercase()) {         document.getelementbyid("row1").innerhtml="<p>" + txt.fontsize(5) + "</p>";document.close();     } else {         //user has inputted incorrect string         document.getelementbyid("row1").innerhtml="<p>" + txt1.fontsize(5) + "<a href='#' onclick='javascript:location.reload();'>try again</a></p>";document.close();     } } </script>

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