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<!DOCTYPE html> <html> <body> <h2>JavaScript const</h2> <p>您不能重新赋值常量数组：</p> <p id="demo"></p> <script> try { const cars = ["Saab", "Volvo", "BMW"]; cars = ["Toyota", "Volvo", "Audi"]; } catch (err) { document.getElementById("demo").innerHTML = err; } </script> </body> </html>