W3School TIY Editor
W3School 在线教程
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暗黑模式
运行代码
<!DOCTYPE html> <html> <body> <p>请单击按钮，对字符串中的“w3school”进行不区分大小写的搜索。</p> <button onclick="myFunction()">试一试</button> <p id="demo"></p> <script> function myFunction() { var str = "Visit W3School"; var patt1 = /w3school/i; var result = str.match(patt1); document.getElementById("demo").innerHTML = result; } </script> </body> </html>