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<!DOCTYPE html> <html> <body> <h2>Common JavaScript Mistakes</h2> <p>Adding a number as a number produces a different result from adding a number as a string:</p> <p id="demo"></p> <script> let y = 10 y += "5"; document.getElementById("demo").innerHTML = y; </script> </body> <!-- /js/tryit.asp?filename=tryjs_mistakes_add_1 Thu, 06 Feb 2025 19:15:30 GMT --> </html>
