Home
JS
JS
Tryit: JAVASCRIPT
运行 ❯
×
Change Orientation
Change Theme, Dark/Light
<!DOCTYPE html> <html> <body> <p>exec() 方法如果找到匹配则返回匹配的文本，否则返回空值。</p> <p>单击该按钮可在字符串中搜索字符“e”。</p> <button onclick="myFunction()">试一试</button> <p id="demo"></p> <script> function myFunction() { var str = "The best things in life are free"; var patt = new RegExp("e"); var res = patt.exec(str); document.getElementById("demo").innerHTML = res; } </script> </body> </html>