修改androidbackview方法12

src/views/exam/begin.vue

@@ -4,7 +4,7 @@
       <div class="header-text-left">Sub of a Driver Training System</div>
       <div class="headerImg">
         <img :src="subjectImg" />
-        <img @touchstart="backViewH5" src="@/assets/img/backButton.png" class="backButton" />
+        <img v-if="visible" @touchstart="backViewH5" src="@/assets/img/backButton.png" class="backButton" />
       </div>
       <div class="header-text-right">Sub of a Driver Training System</div>
       <div style="background: #fff; width: 100%; overflow: hidden" class="">
@@ -54,7 +54,7 @@
 </template>
 
 <script lang="ts">
-import { defineComponent } from 'vue';
+import { defineComponent, ref } from 'vue';
 import { useRouter, useRoute } from 'vue-router';
 // import Api from '@/api/api';
 import Phone from '@/utils/phone';
@@ -82,9 +82,11 @@ export default defineComponent({
     //   console.log(res)
     //   window.localStorage.setItem("token",res.data.token)
     // })
+    const visible = ref(true)
     const backViewH5 = (e:TouchEvent)=>{
       alert("backViewH5")
       e.preventDefault();
+
       backView()
 
     }
@@ -94,6 +96,7 @@ export default defineComponent({
       push,
       subjectImg,
       backViewH5,
+      visible
     };
   },
 });