源代码 ：
点击运行
<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>开源教程(ossoft.cn)</title> </head> <body> <h2>JavaScript const</h2> <p>我们不能对常量数组重新赋值：</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>
运行结果