我们可以通过设定按钮的onclick属性来给按钮绑定onclick事件
<!DOCTYPE html> <html> <head> <script> function displayDate() { document.getElementById("demo").innerHTML=Date(); } </script> </head> <body> <h1>My First JavaScript</h1> <p id="demo">This is a paragraph.</p> <button type="button" onclick="displayDate()">Display Date</button> </body> </html>