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<!DOCTYPE html> <html> <body> <h1>JavaScript 正则表达式</h1> <p>在短语中搜索字符 "LO"："HELLO, LOOK AT YOU!", 并返回它出现的第一个位置，且不在单词的开头处：</p> <p><span id="demo"></span></p> <script> let text = "HELLO, LOOK AT YOU!"; let pattern = /\BLO/; let result = text.search(pattern); document.getElementById("demo").innerHTML = "在此位置找到：" + result; </script> </body> </html>