elementui自定义坐标（element-ui 上传图片后标注坐标点）

<template>
    <li class="mapForm">
        <li class="left">
            <el-form ref="form" :model="form" :rules="rules" label-width="160px">
                <el-form-item label="地图名称" prop="mapName">
                    <el-input v-model="form.mapName" size="mini" clearable class="formInputClass"></el-input>
                </el-form-item>
                <el-form-item label="地图描述" prop="remarks">
                    <el-input type="textarea" v-model="form.remarks" size="mini" clearable class="formInputClass"></el-input>
                </el-form-item>
                <el-form-item label="点位信息" prop="" v-if="mapList.length > 0">
                    <li class="mapContent">
                        <li v-for="(map,key) in mapList" :key="key">
                            <li class="pointAbscissaOrdinate"><span>点位坐标{{key+1}}：{{map.abscissa}}-{{map.ordinate}}</span></li>
                            <el-select v-model="mapList[key]['point']" placeholder="请选择" class="selectClass" @change="changePoint">
                                <el-option v-for="(item, key) in pointList" :key="key" :label="item.name" :value="item.point">
                                </el-option>
                            </el-select>
                        </li>
                    </li>
                </el-form-item>
                <li class="btn">
                    <el-button @click="checkParams" type="primary">提交</el-button>
                </li>
            </el-form>
        </li>
        <li class="right" id="">
            <li class="imgli" id="imgli" v-loading="loadStage">
                <img :src="fileSrc" width="1100" height="720" id="imgPainter" />
                <li class="marker" v-for="(item, key) in mapList" :key="key" :style="{top: item.ordinate+'px', 'left': item.abscissa+'px'}" @contextmenu.prevent="clearMarker(key)">
                    {{key+1}}
                    <li class="ponint">{{item.point}}</li>
                </li>
            </li>
            <li class="uploadBtn">
                <el-upload class="upload-demo" ref="upload" action="" :on-change="handleChange" :show-file-list="false" :on-remove="handleRemove" :auto-upload="false" style="display:inline-block;">
                    <el-button slot="trigger" size="mini" type="primary">选取文件</el-button>
                </el-upload>
                <el-button @click="clearPic" type="danger">清除所有点位</el-button>
            </li>
            <li class="info"><i class="el-icon-info"></i>显示大小为1100px*720px</li>
            <li class="info"><i class="el-icon-info"></i>图片框内鼠标左键标点</li>
            <li class="info"><i class="el-icon-info"></i>图片框内鼠标右键已经标注的点删除该点</li>
        </li>
    </li>
</template>
<script>
export default {
    name: 'mapFormComponent',
    data() {
        return {
            form: {
                mapName: "",
            },
            rules: {
                mapName: [
                    { required: true, message: "请输入地图名称", trigger: "blur" },
                ],
            },
            fileList: [],
            fileSrc: '',
            pointList: [
                { name: "排放口1", point: "@FQ01" },
                { name: "排放口2", point: "@FQ02" },
            ],
            mapList: [],           //斑马线的数组
            canBiaoZhu: true,  //是否可以进行标注
            pointColor: 'red',   //点的颜色
            pointSize: 20,       //点的大小
            pointSelectList: {},
            notifyId: {},
            loadStage: false,
        };
    },
    created() { },
    mounted() {
        // 绘点区域事件绑定
        let _this = this;
        if (document.getElementById('imgPainter')) {
            document.getElementById('imgPainter').onmousedown = (e) => {
                e = e || window.event
                if (e.button !== 2) {       //判断是否右击
                    if (this.canBiaoZhu && this.fileSrc != '') {    //判断是否可以进行标注  需上传图片
                        var x = e.offsetX || e.layerX
                        var y = e.offsetY || e.layerY
                        this.mapList.push({
                            id: this.mapList.length + 1,
                            name: '',
                            abscissa: x,
                            ordinate: y,
                        })
                        // 设置变量
                        // this.pointSelectList.$set(0);
                        let key = `point`;
                        _this.$set(this.mapList[this.mapList.length - 1], key, "")
                    } else {
                        //提示上传图片
                        // 只显示一次
                        if (_this.notifyId.id)
                            _this.notifyId.close();
                        this.notifyId = _this.$notify.error({
                            title: '提示信息',
                            message: '请先上传图片后再标点',
                            showClose: true,
                        });
                    }
                } else {
                    return false
                }
            }
        }
        // 右键阻止
        var oli1 = document.getElementById('imgli');
        oli1.oncontextmenu = function (ev) {
            var e = e || window.event;
            //阻止冒泡
            e.cancelBubble = true;
            //阻止触发默认事件
            e.returnValue = false;
        }
    },
    methods: {
        changePoint() {
            /**point change */
            this.$forceUpdate();
        },
        clearMarker(index) {
            /**清除marker */
            this.mapList.splice(index, 1);
        },
        handleChange(file, fileList) {
            this.loadStage = true;
            let fileName = file.name;
            let regex = /(.jpg" alt="elementui自定义坐标（element-ui 上传图片后标注坐标点）" border="0" />