Demo：新增删除节点图片前的二次提示

web/src/lang/en_us.js

@@ -306,7 +306,8 @@ export default {
     yes: 'Yes',
     no: 'No',
     exportError: 'Export failed',
-    dragTip: 'Release here to import the file'
+    dragTip: 'Release here to import the file',
+    deleteNodeImgTip: 'Are you sure to delete the node image?'
   },
   mouseAction: {
     tip1:

web/src/lang/zh_cn.js

@@ -300,7 +300,8 @@ export default {
     yes: '是',
     no: '否',
     exportError: '导出失败',
-    dragTip: '在此释放以导入该文件'
+    dragTip: '在此释放以导入该文件',
+    deleteNodeImgTip: '是否确认删除该节点图片？'
   },
   mouseAction: {
     tip1: '当前：左键拖动画布，右键框选节点',

web/src/pages/Edit/components/Edit.vue

@@ -421,6 +421,25 @@ export default {
         },
         expandBtnNumHandler: num => {
           return num >= 100 ? '…' : num
+        },
+        beforeDeleteNodeImg: node => {
+          return new Promise(resolve => {
+            this.$confirm(
+              this.$t('edit.deleteNodeImgTip'),
+              this.$t('edit.tip'),
+              {
+                confirmButtonText: this.$t('edit.yes'),
+                cancelButtonText: this.$t('edit.no'),
+                type: 'warning'
+              }
+            )
+              .then(() => {
+                resolve(false)
+              })
+              .catch(() => {
+                resolve(true)
+              })
+          })
         }
         // createNodePrefixContent: (node) => {
         //   const el = document.createElement('div')