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<!DOCTYPE html> <html> <head> </head> <body> <h1>Add Space Before Capital Letter Javascript</h1> <input type="text" id="inputText" value="ThisIsJavascriptTutorial" /> <button onclick="updateOutput()">Update Output</button> <p id="output"></p> <script> function insertSpaceBeforeCapitalLetters(str) { return str.replace(/([A-Z])/g, " $1").trim(); } function updateOutput() { const input = document.getElementById("inputText").value; const result = insertSpaceBeforeCapitalLetters(input); document.getElementById("output").textContent = result; } </script> </body> </html>