Home
JS
JS
Tryit: JAVASCRIPT
运行 ❯
×
Change Orientation
Change Theme, Dark/Light
<!DOCTYPE html> <html> <body> <p>单击按钮将前两个数组元素复制到第三和第四个位置。</p> <button onclick="myFunction()">试一试</button> <p id="demo"></p> <p><strong>注意：</strong> IE 11（及更早版本）不支持 copyWithin() 方法。</p> <script> var fruits = ["Banana", "Orange", "Apple", "Mango", "Kiwi", "Papaya"]; document.getElementById("demo").innerHTML = fruits; function myFunction() { document.getElementById("demo").innerHTML = fruits.copyWithin(2,0,2); } </script> </body> </html>