html +vue.js 实现图片上传

<!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, init

唐十八_wei

18689人浏览 · 2021-07-07 09:55:36

唐十八_wei · 2021-07-07 09:55:36 发布

<!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>
    <style>
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        #app {
            width: 900px;
            background-color: rgb(241, 241, 241);
            margin: 50px auto;
        }

        .view {
            display: flex;
            justify-content: space-around;
            flex-wrap: wrap;
            align-items: space-around;
        }

        .view>li {
            width: 200px;
            height: 120px;
            background-color: rgba(54, 194, 35, 0.1);
            list-style: none;
            margin: 20px;
            position: relative;
        }

        .view>li>img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .delect {
            position: absolute;
            right: 0;
            top: 0;
            width: 20px;
            height: 20px;
            text-align: center;
            line-height: 20px;
            font-size: 15px;
            background-color: rgba(255, 255, 255, 0.5);
            user-select: none;
            cursor: pointer;
            opacity: 0;
        }

        .delect:hover {

            background-color: rgba(31, 31, 31, 0.5);
            color: white;
        }

        .view>li:hover .delect {
            opacity: 1;
        }

        .upload {
            width: 80px;
            height: 20px;
            background-color: rgba(135, 206, 235, 0.2);
            border: 1px dashed black;
            border-radius: 5px;
            position: relative;

        }

        .upload:hover {
            background-color: rgba(135, 206, 235, 1);
        }

        .upload::before {
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            content: '上传图片';
            font-size: 13px;
            text-align: center;
            font-family: 'fangsong';
            line-height: 20px;
            user-select: none;
        }

        #file {
            width: 100%;
            height: 100%;
            opacity: 0;
        }
    </style>
</head>

<body>
    <div id="app">
        <div class="upload">
            <input type="file" id="file" multiple @change="upload">
        </div>
        <ul class="view">
            <li v-for="(item,index) in list" :key="index">
                <img :src="item">
                <div class="delect" @click="delect(index)">×</div>
            </li>
        </ul>
    </div>
    <!-- 开发环境版本，包含了有帮助的命令行警告 -->
    <script src="https://cdn.jsdelivr.net/npm/vue/dist/vue.js"></script>
    <script>
        var app = new Vue({
            el: "#app",
            data: {
                list: []
            },
            methods: {
                upload(e) {
                    //e.target指向事件执行时鼠标所点击区域的那个元素
                    console.log(e.target.files)
                    //------------------------------------------------------     
                    for (let item of e.target.files) {
                        if (!/image\/\w+/.test(item.type)) {
                            alert("只能选择图片");
                            return;
                        }
                        var _this = this;
                        let reader = new FileReader();
                        // readAsDataURL方法可以将上传的图片格式转为base64,然后在存入到图片路径,这样就可以上传任意位置的图片
                        reader.readAsDataURL(item);
                        reader.addEventListener('load', function () {
                            _this.list.push(this.result)
                        })
                    }
                    //------------------------------------------------------------
                },
                delect(index) {
                    console.log(index);
                    this.list.splice(index, 1);
                },
            }
        })
    </script>
</body>

</html>

Vue

前往低代码交流专区

更多推荐

vue 表单验证

1、6位小写字母和数字必须包含两个字母rules: [{ required: true, message: "XXX不能为空", trigger: "blur" },{ max: 6, message: "最大长度为6位字符", trigger: "blur" },{pattern: /^(?=(?:[^a-z]*[a-z]){2})[a-z0-9]{6,6}$/, //不连续的两位字母// /^