!14494 示例代码低错修改

Merge pull request !14494 from zengyawen/master

zh-cn/application-dev/reference/apis/js-apis-file-hash.md

@@ -92,6 +92,7 @@ hash(path: string, algorithm: string, callback: AsyncCallback<string>): vo
 
 **示例：**
   ```js
+  let filePath = pathDir + "/test.txt";
   Hash.hash(filePath, "sha256", (err, str) => {
     if (err) {
       console.info("calculate file hash failed with error message: " + err.message + ", error code: " + err.code);

zh-cn/application-dev/reference/apis/js-apis-hichecker.md

@@ -46,11 +46,11 @@ addCheckRule(rule: bigint): void
 ```js
 try {
     // 添加一条规则
-    hichecker.addCheckRule(hichecker.RULE_CAUTION_PRINT_LOG);}
+    hichecker.addCheckRule(hichecker.RULE_CAUTION_PRINT_LOG);
     // 添加多条规则
-    hichecker.addCheckRule(
-        hichecker.RULE_CAUTION_PRINT_LOG | hichecker.RULE_CAUTION_TRIGGER_CRASH);
-catch (err) {
+    // hichecker.addCheckRule(
+    //     hichecker.RULE_CAUTION_PRINT_LOG | hichecker.RULE_CAUTION_TRIGGER_CRASH);
+} catch (err) {
     console.error(`code: ${err.code}, message: ${err.message}`);
 }
 ```
@@ -76,9 +76,9 @@ try {
     // 删除一条规则
     hichecker.removeCheckRule(hichecker.RULE_CAUTION_PRINT_LOG);
     // 删除多条规则
-    hichecker.removeCheckRule(
-        hichecker.RULE_CAUTION_PRINT_LOG | hichecker.RULE_CAUTION_TRIGGER_CRASH);
-catch (err) {
+    // hichecker.removeCheckRule(
+    //     hichecker.RULE_CAUTION_PRINT_LOG | hichecker.RULE_CAUTION_TRIGGER_CRASH);
+} catch (err) {
     console.error(`code: ${err.code}, message: ${err.message}`);
 }
 ```
@@ -113,7 +113,7 @@ try {
     // 查询是否包含
     hichecker.containsCheckRule(hichecker.RULE_THREAD_CHECK_SLOW_PROCESS); // return true;
     hichecker.containsCheckRule(hichecker.RULE_CAUTION_PRINT_LOG); // return false;
-catch (err) {
+} catch (err) {
     console.error(`code: ${err.code}, message: ${err.message}`);
 }
 ```

zh-cn/application-dev/reference/apis/js-apis-hidebug.md

@@ -297,7 +297,7 @@ import hidebug from '@ohos.hidebug'
 
 try {
   hidebug.startJsCpuProfiling("cpu_profiling");
-  ...
+  // ...
   hidebug.stopJsCpuProfiling();
 } catch (error) {
   console.info(error.code)
@@ -326,7 +326,7 @@ import hidebug from '@ohos.hidebug'
 
 try {
   hidebug.startJsCpuProfiling("cpu_profiling");
-  ...
+  // ...
   hidebug.stopJsCpuProfiling();
 } catch (error) {
   console.info(error.code)