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Please keep below script code in clearcache.js file (function () { var process_scripts = false; var rep = /.*\?.*/, links = document.getElementsByTagName('link'), scripts = document.getElementsByTagName('script'); var value = document.getElementsByName('clear-browser-cache'); for (var i = 0; i < value.length; i++) { var val = value[i], outerHTML = val.outerHTML; var check = /.*value="true".*/; if (check.test(outerHTML)) { process_scripts = true; } } for (var i = 0; i < links.length; i++) { var link = links[i], href = link.href; if (rep.test(href)) { link.href = href + '&' + Date.now(); } else { link.href = href + '?' + Date.now(); } } if (process_scripts) { for (var i = 0; i < scripts.length; i++) { var script = scripts[i], src = script.src; if (src !== "") { if (rep.test(src)) { script.src = src + '&' + Date.now(); } else { script.src = src + '?' + Date.now(); } } } } })(); And add below scri...

We can upload the file using file control and read content of that file using below script code. <html> <head>     <script>       var openFile = function(event) {         var input = event.target;         var reader = new FileReader();         reader.onload = function(){           var text = reader.result;           var node = document.getElementById('codeInTest');           node.value = text;         };         reader.readAsText(input.files[0]);       };     </script> </head> <body>     <input type='file' accept='text/plain' onchange='openFile(event)'><br>     <textarea rows="17" cols="129" wrap="virtual" id="fileContent"></textarea> </body...