JS 阅读用户协议倒计时关闭效果

最新推荐文章于 2024-11-18 16:07:05 发布

揭开画皮

最新推荐文章于 2024-11-18 16:07:05 发布

阅读量382

点赞数 4

CC 4.0 BY-SA版权

文章标签： javascript 前端 css

本文链接：https://blog.youkuaiyun.com/m0_75166176/article/details/139495358

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        div{
            width:250px;
            text-align: center;
        }
        .btn{
            display: block;
            margin: 0 auto;
        }
        .display{
            display: none;
        }
    </style>
</head>
<body>
    <div>
    <textarea name="" id="" cols="30" rows="10" >
        Lorem, ipsum dolor sit amet consectetur adipisicing elit. Laborum accusamus quibusdam debitis deserunt ea commodi eaque, ullam fugiat, obcaecati natus quas! Quasi, quam accusamus. Molestias pariatur ducimus corrupti eveniet repellendus?

    </textarea>
    <button class= "btn">阅读用户协议5秒</button>
    </div>
    <script>

        const btn = document.querySelector('.btn');
        // 禁止点击
        btn.disabled = true;
        const text = document.querySelector('textarea');
        // 设置5秒倒计时
        let i = 5;
        let timer1 =setInterval(function(){
            i--;
            btn.innerHTML = `阅读用户协议${i}秒`;
            if(i===0){
                btn.disabled = false;
                btn.innerHTML = '点击关闭';
                // 完成目的关闭计时器
                clearInterval(timer1);
            }
        },1000);
        btn.onclick = function(){
            text.className = 'display';
            btn.className = 'display';
            // text.style.display= 'none';
           // btn.style.display= 'none';
        }
        // let i =0;
        // setInterval(function fn(){
        //     document.write(i);
        //     i++;
        // },200);
    </script>
</body>
</html>