多个单独图片进行上传，并预览

想要达到的效果图：（有多个单独的图片进行添加并预览，统一上传）

 

css:

 

.message {
    background-color: #fff;
    margin-top: 0.26rem;
    padding: 0.3rem;
}
.message p {
    color: #e96969;
    font-size: 0.48rem;
    margin: 0.4rem 0;
    padding-left: 0.78rem;
    position: relative;
}
.message p span {
    font-size: 0.36rem;
}
.message p em {
    display: inline-block;
    width: 0.12rem;
    height: 0.48rem;
    border-radius: 0.1rem;
    background-color: #e96969;
    position: absolute;
    left: 0.28rem;
    top: 0.12rem;
}
.message ul li {
    margin: 0 auto;
    width: 8.7rem;
    padding: 0.38rem 0;
    background-color: #eee;
    position: relative;
    text-align: center;
    border-radius: 0.2rem;
    margin-bottom: 0.44rem;
}
.message ul li img {
    margin: 0.13rem 0 0.525rem 0 ;
    width: 5.4rem;
    height: 2.8rem;
}
.message ul li div {
    font-size: 0.36rem;
    color: #666;
}
.message ul li div span {
    color: #e53a3a;
}
.message ul li input {
    width: 100%;
    height: 100%;
    position: absolute;
    left: 0;
    top: 0;
    background-color: red;
    opacity: 0;
}
.message .footer {
    padding: 0.3rem;
    width: 100%;
    border-top: 0.02rem solid #ccc;
    position: fixed;
    bottom: 0;
    left: 0;
    background-color: #fff;
}
.message .footer button {
    color: #fff;
    font-size: 0.48rem;
    height: 1.32rem;
    width: 100%;
    background: url(../images/footer.png) no-repeat;
    background-size: cover;
    background-position: center center;
    line-height: 1.32rem;
    text-align: center;
    border: 0;
    outline: 0;
    border-radius: 0.1rem;
}

 

 

html:

<div class="message">
    <p><em></em>证件上传<span>（请上传个人真实证件）</span></p>
    <ul>
        <li>
            <input type="file" id="imageUrl01" onchange="showImg('imageUrl01','photoImg01')"/>
            <img src="images/camera.png" alt="" id="photoImg01"/>
            <div>点击上传身份证<span>人像面</span>照片</div>
        </li>
        <li>
            <input type="file" id="imageUrl02" onchange="showImg('imageUrl02','photoImg02')"/>
            <img src="images/camera.png" alt="" id="photoImg02"/>
            <div>点击上传身份证<span>国徽面</span>照片</div>
        </li>
        <li>
            <input type="file" id="imageUrl03" onchange="showImg('imageUrl03','photoImg03')"/>
            <img src="images/camera.png" alt="" id="photoImg03"/>
            <div>点击上传身份证<span>手持身份证</span>照片</div>
        </li>
    </ul>
    <div class="footer">
        <button type="button">提交</button>
    </div>
</div>

js:

<script>
    function showImg(fileid,target){//给2个参数，其他位置的参数名一致，值就进去了
        var preview = document.querySelector('#'+target);//获取img元素,显示图片位置，根据el表达式('#'+target)
        var file = document.querySelector('#'+fileid).files[0];//根据id拿到文件选择框里面的文件，
        var reader = new FileReader();//创建FileReader接口（把文件放到图片预览框里面）
        reader.onloadend = function () {
            preview.src = reader.result;
        }
        if (file) {
            reader.readAsDataURL(file);
        } else {
            preview.src = "";
        }
    }
</script>