<!DOCTYPE html><html><body><p>Click the button to decode a base-64 encoded string.</p><button onclick="myFunction()">Try it</button><p><strong>Note:</strong> The atob() method is not supported in IE9 and earlier.</p><p id="demo"></p><script>function myFunction() { var str = window.location.href;//like https://www.w3schools.com/bootstrap4/tryit.asp?filename=trybs_card_header&stacked=h var enc = window.btoa(str); var dec = window.atob(enc); var res = "Encoded String: " + enc + "<br>" + "Decoded String: " + dec; document.getElementById("demo").innerHTML = res;}</script></body></html>
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