Vant uploader implements the drag-and-drop function for uploading pictures (set as cover)

The effect diagram is as follows:

<!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>
    <link rel="stylesheet" href="public/vant/index.css" rel="external nofollow" >
    <script src="public/vue.min.js"></script>
    <script src="public/vant/vant.min.js"></script>
    <script src="public/sortable/Sortable.min.js"></script>
    <script src="public/draggle/vuedraggable.umd.js"></script>

</head>
<style>
    .img_uploader{display: flex;}
    .img_upload span {display: -webkit-box;display: -webkit-flex;display: flex;-webkit-flex-wrap: wrap;flex-wrap: wrap;}
    .img_upload_item {position: relative;margin: 0 8px 8px 0;cursor: pointer;}
    .preview-cover {position: absolute;bottom: 0;box-sizing: border-box;width: 100%;padding: 4px;color: #fff;font-size: 12px;text-align: center;background: rgba(0, 0, 0, 0.3);}
    .van-image__error,.van-image__img,.van-image__loading {object-fit: cover;}
</style>

<body>
    <div id="app">
        <div class="img_uploader">
            <van-uploader :after-read="onRead"> </van-uploader>
            <draggable class="img_upload" v-model="fileList" :group="{name:'imgs'}" @end="end" animation="200">
                <transition-group>
                    <div class="img_upload_item" v-for="(item,index) in fileList" :key="index" @click="previewImg(fileList,index)">
                        <div class="van-image van-uploader__preview-image">
                            <img :src="item.content" alt="Picture" class="van-image__img">
                            <div class="van-uploader__preview-cover">
                                <div class="preview-cover van-ellipsis" v-if="index == 0">Cover image</div>
                            </div>
                        </div>
                        <div class="van-uploader__preview-delete" @click="delImg(index)">
                            <i class="van-icon van-icon-cross van-uploader__preview-delete-icon"></i>
                        </div>
                    </div>
                </transition-group>
            </draggable>
        </div>
    </div>
</body>
<script>
    var app = new Vue({
        el: "#app",
        components:
            vuedraggable: window.vuedraggable, //Register drag component on current page},
        data() {
            return {
                fileList: [
                    {content: 'https://img01.yzcdn.cn/vant/leaf.jpg',name: '12'},
                    {content: 'images/banner1.png',name: '12'},
                    {content: 'images/banner2.png',name: '12'},
                    {content: 'images/banner3.png',name: '12'},
                    {content: 'images/banner4.png',name: '12'},
                ],
            }
        },
        methods: {
            // Delete the image delImg(index) {
                if (isNaN(index) || index >= this.fileList.length) {
                    return false
                }
                let tmp = []
                for (let i = 0, len = this.fileList.length; i < len; i++) {
                    if (this.fileList[i] !== this.fileList[index]) {
                        tmp.push(this.fileList[i])
                    }
                }
                this.fileList = tmp
            },
            onRead(file) { // Upload the image to the image server this.fileList.push(file) 
                console.log(file)
            },
            // Click to preview previewImg(images, index) {
                let listSrc = [];
                this.fileList.forEach(function(v,i){
                    listSrc.push(v.content)
                })
                vant.ImagePreview({
                    images:listSrc,
                    startPosition: index,
                    closeable:true
                });
            },
            // Get the data just dragged after the drag ends end(e) {
                var _oldIndex = e.oldIndex
                var _oldItem = this.fileList[_oldIndex]
                console.log(_oldItem);
            },
        }
    })
</script>

</html>

This is the end of this article about how to use vant uploader to upload pictures by dragging and dropping (set as cover). For more information about vant uploader to upload pictures, please search for previous articles on 123WORDPRESS.COM or continue to browse the following related articles. I hope you will support 123WORDPRESS.COM in the future!

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