点击运行
<!DOCTYPE html> <html> <body> <h1>JavaScript 正则表达式</h1> <p>在字符串中搜索“w3School”，并显示匹配的位置：</p> <p id="demo"></p> <script> var str = "Visit 千木教程"; var n = str.search(/w3School/i); document.getElementById("demo").innerHTML = n; </script> </body> </html>
运行结果
