提示卡片

html部分

<div class="msg-list">

</div>

<button class="btn">点我看提示</button>

css部分

*{
    margin: 0;
    padding: 0;
}

body{
    background-color: rebeccapurple;
    height: 100vh;
    overflow: hidden;
    display: flex;
    justify-content: center;
    align-items: center;
}

.btn{
    background-color: #fff;
    color: rebeccapurple;
    font-weight: bold;
    padding: 1rem;
    border-radius: 5px;
    border: none;
    cursor: pointer;
}
.btn:focus{
    outline: none;
}
.btn:active{
    transform: scale(0.98);
}

.msg{
    padding: 10px 30px;
    background-color: #fff;
    border-radius: 20px;
    margin: 10px 0;
    color: #fff;
}
.info{
    background-color: #ccc;
}
.success{
    background-color: green;
}
.error{
    background-color: red;
}

.msg-list{
    position: fixed;
    top: 10px;
    right: 10px;
}

js部分

// 获取对象
const msgs=document.querySelector(".msg-list")
const btn=document.querySelector(".btn")

const msg=[
    "消息1",
    "消息2",
    "消息3",
]
const mgs_status=["info","success","error"]

// 绑定点击事件
btn.addEventListener("click",function(){

    // 创建元素以及添加样式
    const div=document.createElement("div");
    const index=random()    
    div.className="msg";
    div.innerHTML=msg[index]
    div.classList.add(mgs_status[index])
    console.log(div);
    msgs.appendChild(div);

    setTimeout(()=>{
        div.remove()
    },1000)

    
})


function random(){
    const index=Math.floor(Math.random()*3);
    return index
}