I use the background template of iview admin, but I just don"t understand how to upload pictures.

searched a lot but couldn"t find a solution.

related codes

<style lang="less">
    @import "../../../../styles/loading.less";
</style>

<template>
    <div>
        <Card shadow>
            <textarea class="tinymce-textarea" id="tinymceEditer"></textarea>
        </Card>
        <Spin fix v-if="spinShow">
            <Icon type="load-c" size=18 class="demo-spin-icon-load"></Icon>
            <div>...</div>
        </Spin>
    </div>
</template>

<script>
import tinymce from "tinymce";

export default {
    name: "text-editor",
    data () {
        return {
            spinShow: true
        };
    },
    methods: {
        init () {
            this.$nextTick(() => {
                let vm = this;
                let height = document.body.offsetHeight - 100;
                tinymce.init({
                    selector: "-sharptinymceEditer",
                    branding: false,
                    elementpath: true,
                    height: height,
                    language: "zh_CN.GB2312",
                    // menubar: "edit insert view format table tools",
                    plugins: [
                        "advlist autolink lists link image charmap print preview hr anchor pagebreak imagetools",
                        "searchreplace visualblocks visualchars code fullpage",
                        "insertdatetime media nonbreaking save table contextmenu directionality",
                        "emoticons paste textcolor colorpicker textpattern imagetools codesample"
                    ],
                    toolbar1: " newnote print preview | undo redo | insert | styleselect | forecolor backcolor bold italic | alignleft aligncenter alignright alignjustify | bullist numlist outdent indent | link image emoticons media codesample",
                    autosave_interval: "20s",
                    image_advtab: true,
                    table_default_styles: {
                        width: "100%",
                        borderCollapse: "collapse"
                    },
                    setup: function (editor) {
                        editor.on("init", function (e) {
                            vm.spinShow = false;
                            if (localStorage.editorContent) {
                                tinymce.get("tinymceEditer").setContent(localStorage.editorContent);
                            }
                        });
                        editor.on("keydown", function (e) {
                            localStorage.editorContent = tinymce.get("tinymceEditer").getContent();
                        });
                    }
                });
            });
        }
    },
    mounted () {
        this.init();
    },
    destroyed () {
        tinymce.get("tinymceEditer").destroy();
    }
};
</script>

<style lang="less" scoped>

</style>

Click to insert a picture. There are only these two cases, so how to achieve local upload?