49、数组操作-新增

2024-10-04 / 0 评论 / 6 阅读 / 正在检测是否收录...

10/04

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <script>
        let arr = ['pink','hotpink']
        // 新增 push 推末尾
        // console.log(arr.push('deeppink')) // 3
        // arr.push('deeppink', 'linghtpink')
        // console.log(arr)

        // 开头追加
        arr.unshift('red')
        console.log(arr)
        
    </script>
</body>
</html>

JavaScript