编辑代码:
查看结果 »
试一试 - ©
w3ii.com
<!DOCTYPE html> <html> <body> <p id="demo">This is a p element with id="demo".</p> <p>Click the button to change the text of the p element.</p> <button onclick="myFunction()">Try it</button> <script> function myFunction() { document.querySelector("#demo").innerHTML = "Hello World!"; } </script> </body> </html>