我正在嘗試添加兩個放在輸入字段中的數字。然后我想顯示結果，但結果立即消失。function add() { var num1 = document.getElementById("num1").value; var num2 = document.getElementById("num2").value; var result = num1 + num2; var display = document.getElementById("display"); display.append(result);}<!DOCTYPE html><html> <head> <meta charset="utf-8"> <title>JS</title> </head> <body id="body"> <form action="" id="form"> <label for="num1">Number 1</label> <input type="number" name="num1" id="num1"> <label for="num2">Number 2</label> <input type="number" name="num2" id="num2"> <button id="submit" onclick="add()">Add</button> </form> <p id="display"></p> <script language="javascript" type="text/javascript" src="js.js"></script> </div> </body></html>我做錯了什么？感謝您的任何幫助！
為什么我提交表單后結果不保留？
慕容森
2022-08-18 16:02:40
