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<!DOCTYPE html> <html> <head> <title>Let's Coding Example</title> </head> <body> <div id="html-div"> </div> <script> const content = "Hello World"; const myHeaders = new Headers(); myHeaders.append("Content-Type", "text/plain"); myHeaders.append("Content-Length", content.length.toString()); myHeaders.append("X-Custom-Header", "ProcessThisImmediately"); </script> </body> </html>
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