源代碼
點擊運行
<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>教程</title> </head> <body> <p>點擊按鈕創建及增加字符串變量。</p> <button onclick="myFunction()">點擊這里</button> <p id="demo"></p> <script> function myFunction() { var x=5+5; var y="5"+5; var z="Hello"+5; var demoP=document.getElementById("demo"); demoP.innerHTML=x + "<br>" + y + "<br>" + z; } </script> </body> </html>
運行結果