点击运行
<!DOCTYPE html> <html> <body> <p>单击按钮可在字符串中单词的开头或结尾处对“W3”进行全局搜索。</p> <button onclick="myFunction()">试一试</button> <p id="demo"></p> <script> function myFunction() { var str = "Visit W3Schools"; var patt1 = /\bW3/g; var result = str.match(patt1); document.getElementById("demo").innerHTML = result; } </script> </body> </html>
运行结果
