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<!DOCTYPE html> <html> <head> <title>Let's Coding Example</title> </head> <body> <div id="html-div"> </div> <script> // Example of using let and const let x = 10; x = 20; // Valid, because x is declared with let const y = 30; y = 40; // Error! Cannot reassign a constant variable. </script> </body> </html>
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