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<!DOCTYPE html> <html> <body> <h1>JavaScript 正则表达式</h1> <p>查找 NUL 字符的位置：</p> <p id="demo"></p> <script> let text = "Visit W3School.\0Learn JavaScript."; let pattern = /\0/; let result = text.search(pattern); document.getElementById("demo").innerHTML = result; </script> </body> </html>