perf:refine code

src/views/form/index.vue

@@ -41,7 +41,7 @@
       </el-form-item>
       <el-form-item>
         <el-button type="primary" @click="onSubmit">Create</el-button>
-        <el-button>Cancel</el-button>
+        <el-button @click="onCancel">Cancel</el-button>
       </el-form-item>
     </el-form>
   </div>
@@ -66,6 +66,12 @@ export default {
   methods: {
     onSubmit() {
       this.$message('submit!')
+    },
+    onCancel() {
+      this.$message({
+        message: 'cancel!',
+        type: 'warning'
+      })
     }
   }
 }