Home
JS
JS
Tryit: JAVASCRIPT
运行 ❯
×
Change Orientation
Change Theme, Dark/Light
<!DOCTYPE html> <html> <body> <p>单击按钮显示 3 的正弦值。</p> <button onclick="myFunction()">试一试</button> <p id="demo"></p> <script> function myFunction() { document.getElementById("demo").innerHTML = Math.sin(3); } </script> </body> </html>