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<!DOCTYPE html> <html> <body> <h1>JavaScript 正则表达式</h1> <p>全局搜索字符串中至少一个 "o"：</p> <p id="demo"></p> <script> let text = "Hellooo World! Hello W3School!"; let pattern = /o+/g; let result = text.match(pattern); document.getElementById("demo").innerHTML = result; </script> </body> </html>