JavaScript 中的 push() 方法將一個或多個元素新增至陣列的末端。此方法修改原始數組並傳回數組的新長度。
文法:
array.push(element1, element2, ..., elementN);
*範例 1.:*
const fruits = ["Apple", "Banana"]; fruits.push("Orange", "Mango"); console.log(fruits); // Output: ["Apple", "Banana", "Orange", "Mango"]
*範例 2.: *
如何使用push()方法動態加入元素
index.html
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>Fruit List</title> <link rel="stylesheet" href="style.css"> </head> <body> <div id="container"> <h2>Fruit List</h2> <input type="text" id="addEle" placeholder="Enter fruit name..." /> <button onclick="AddEle()">Add Element</button> <h4 id="ans"></h4> </div> <script> function AddEle() { const fruits = ["Banana", "Orange", "Lemon", "Apple", "Mango", "Strawberry"]; const NewVal = document.getElementById("addEle").value; if (NewVal === "") { alert("Please Enter Fruit Name..!"); } else { fruits.push(NewVal); document.getElementById("ans").innerHTML = fruits.join(", "); document.getElementById("addEle").value = ""; } } </script> </body> </html>
樣式.css
body { font-family: Arial, sans-serif; margin: 20px; padding: 0; } #container { max-width: 500px; margin: 0 auto; padding: 20px; border: 1px solid #ddd; border-radius: 5px; } h2 { text-align: center; } input[type="text"] { width: calc(100% - 24px); padding: 10px; margin-bottom: 10px; border: 1px solid #ccc; border-radius: 3px; } button { width: 100%; padding: 10px; background-color: #28a745; color: #fff; border: none; border-radius: 3px; cursor: pointer; } button:hover { background-color: #218838; } h4 { margin-top: 20px; color: #555; }
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