判断的修改和删除、图片回显

src/components/teacher/selectAnswer.vue

@@ -98,8 +98,9 @@ export default {
     this.getAnswerInfo();
   },
   methods: {
-    //查询按钮
+    //模糊查询按钮
     searchList(){
+      this.pagination.current = 1
        this.getAnswerInfo(this.searchForm.question)
     },
     //清空按钮

src/utils/Base64.js

+/**
+ * Base64字符串转二进制流
+ * @param {String} dataurl Base64字符串(字符串包含Data URI scheme，例如：data:image/png;base64, )
+ */
+function dataURLtoBlob(dataurl) {
+  var arr = dataurl.split(","),
+    mime = arr[0].match(/:(.*?);/)[1],
+    bstr = atob(arr[1]),
+    n = bstr.length,
+    u8arr = new Uint8Array(n);
+  while (n--) {
+    u8arr[n] = bstr.charCodeAt(n);
+  }
+  return new Blob([u8arr], {
+    type: mime,
+  });
+}
+/**
+ * Base64字符串转File文件
+ * @param {String} dataurl Base64字符串(字符串包含Data URI scheme，例如：data:image/png;base64, )
+ * @param {String} filename 文件名称
+ */
+function dataURLtoFile(dataurl, ) {
+  let arr = dataurl.split(',');
+  let mime = arr[0].match(/:(.*?);/)[1];
+  let bstr = atob(arr[1]);
+  let n = bstr.length;
+  let u8arr = new Uint8Array(n);
+  while (n--) {
+    u8arr[n] = bstr.charCodeAt(n);
+  }
+  return new File([u8arr], {
+    type: mime
+  });
+}
+export default {
+  dataURLtoBlob,
+  dataURLtoFile
+}