17、隐式转换

2024-10-04 / 0 评论 / 3 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>
        // 任何数据和字符串相加结果都是字符串
        console.log(1 + 1)
        console.log('pink' + 1)
        console.log(2 + 2)
        console.log(2 + '2')//22 加号不同
        console.log(2 - 2)
        console.log(2 - '2')//0
        console.log(+12)
        console.log(+'123') //+转换为数字型

    </script>
</body>
</html>

JavaScript