如何禁用 PDF 查看器的打印屏幕选项

Question

We were given a task of disabling the print screen option for a PDF viewer. I have tried using code but wasn't able to give a blank page either. Please can someone help me in this..

$(document).ready(function() {
  $(window).keyup(function(e) {
    if (e.keyCode == 44) {
      $("body").hide();
    }
  }); 
}); 

Answer 1

I'm not sure what you actually looking for. But this code will help you to disable the print screen. You can't copy any text from the print screen. I must say this is a very weird task for the beginner. Please check what is clipboard data if you don't know.

document.addEventListener("keyup", function (e) {
        var keyCode = e.keyCode ? e.keyCode : e.which;
         if (keyCode == 44) {
                    stopPrintScreen();
         }
       });
    function stopPrintScreen() {
                var inpFld = document.createElement("input");
                inpFld.setAttribute("value", ".");
                inpFld.setAttribute("width", "0");
                inpFld.style.height = "0px";
                inpFld.style.width = "0px";
                inpFld.style.border = "0px";
                document.body.appendChild(inpFld);
                inpFld.select();
                document.execCommand("copy");
                inpFld.remove(inpFld);
     }
     function AccessClipboardData() {
            try {
                 window.clipboardData.setData('text', "Access   Restricted");
                } catch (err) {
               console.log(error)
             }
      }
     setInterval("AccessClipboardData()", 300);