<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>