W3School TIY Editor
W3School 在线教程
改变方向
暗黑模式
运行代码
<!DOCTYPE html> <html> <body> <h1>JavaScript 数组</h1> <p>includes() 方法确定数组是否包含指定的元素。</p> <p id="demo"></p> <script> const fruits = ["Banana", "Orange", "Apple", "Mango"]; document.getElementById("demo").innerHTML = fruits.includes("Mango"); </script> <p>Edge 13（及更早版本）不支持 includes() 方法。</p> </body> </html>