<html><body><h1>JavaScript 正则表达式</h1><p>对从大写 A 到大写 E 的任何字符进行全局搜索：</p><p id="demo"></p><script>let text = "I SCREAM FOR ICE CREAM!";let pattern = /[A-E]/g;let result = text.match(pattern);document.getElementById("demo").innerHTML = result;</script></body></html>