聊天框

 

 

<!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>
<style>
    *{
        margin: 0;
        padding: 0;
    }
    .container{
       position: relative;
    }
    .input{
       position: absolute;
        left: 50%;
        top: 100px;
        transform: translateX(-50%);

    }
    .sub{
        float: right;
        width: 100px;
        height: 40px;
    }
    .output{
        position: absolute;
        left: 50%;
        top: 150px;
        transform: translateX(-50%);
    }
    ul{
        list-style: none;
        margin-top: 100px;
    }
    .input li{
        border-bottom: 1px solid black;
        text-indent: 10px;
        height: 30px;
        line-height: 30px;
        margin-bottom: 10px;
    }
</style>
<body>
    <div class="container">
        <div class="input">
            <textarea name="myinput" id="in" cols="80" rows="10"></textarea>
            <br>
            <button class="sub" id="btn">提交</button>
            <ul class="list"></ul>
        </div>

    </div>
</body>
<script>
    const input=document.getElementById("in")
    const list = document.getElementsByClassName("list")[0]
    const bt=document.getElementById("btn")
    bt.addEventListener('click',()=>{
        const listitem=document.createElement('li')
        listitem.innerHTML=input.value
        list.appendChild(listitem)
        input.value=''
    })
</script>
</html>

 

posted @ 2021-04-22 19:06  Sherlockmmc  阅读(90)  评论(0)    收藏  举报