<!DOCTYPE html> <html> <body> <h1>JavaScript 数字</h1> <p>ES2021 引入了数字分隔符 (_) 以使数字更具可读性:</p> <p>1_000_000_000 和 1000000000 一样吗?</p> <p id="demo"></p> <script> const num1 = 1_000_000_000; const num2 = 1000000000; document.getElementById("demo").innerHTML = (num1 === num2); </script> </body> </html>