Update element.md

docs/uni-app-x/dom/element.md

@@ -243,4 +243,28 @@ getAttribute返回值从HBuilderX 3.93起，调整为string类型，不要使用
 
 <!-- CUSTOMTYPEJSON.Element.methods.takeSnapshot.tutorial -->
 
-截图的示例代码参考[hello uni-app x](https://gitcode.net/dcloud/hello-uni-app-x/-/blob/alpha/pages/API/element-takesnapshot/element-takesnapshot.uvue)
\ No newline at end of file
+
+```uts
+// 找到需要截图节点
+const view = uni.getElementById('snapshot-content')!
+view.takeSnapshot({
+    success: function (res) {
+        // 打印截图文件临时路径
+        console.log(res.tempFilePath)
+        this.snapImage = res.tempFilePath
+        uni.showToast({
+            title: '截图成功，路径：' + res.tempFilePath,
+            icon: "none"
+        })
+    },
+    fail: function (res) {
+        console.log(res)
+        uni.showToast({
+            icon: 'error',
+            title: '截图失败'
+        })
+    }
+})
+```
+
+完整示例代码参考[hello uni-app x](https://gitcode.net/dcloud/hello-uni-app-x/-/blob/alpha/pages/API/element-takesnapshot/element-takesnapshot.uvue)