!21006 关于fs调用相关的示例代码修改

Merge pull request !21006 from jiao_yanlin_001/master

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

@@ -4862,10 +4862,10 @@ async function getCacheDir(){
 }
 let filePath = path + '/StarWars10s-2C-48000-4SW.wav';
 let file = fs.openSync(filePath, fs.OpenMode.READ_ONLY);
-let currStat = await fs.stat(path);
-let buf = new ArrayBuffer(bufferSize);
-let len = currStat.size % bufferSize == 0 ? Math.floor(currStat.size / bufferSize) : Math.floor(currStat.size / bufferSize + 1);
-for (let i = 0;i < len; i++) {
+fs.stat(path).then((stat) => {
+  let buf = new ArrayBuffer(bufferSize);
+  let len = stat.size % bufferSize == 0 ? Math.floor(stat.size / bufferSize) : Math.floor(stat.size / bufferSize + 1);
+  for (let i = 0;i < len; i++) {
     let options = {
       offset: i * bufferSize,
       length: bufferSize
@@ -4880,7 +4880,9 @@ for (let i = 0;i < len; i++) {
         }
       })
     })	  
-}
+  }
+});
+
 
 ```
 
@@ -4916,10 +4918,10 @@ async function getCacheDir(){
 }
 let filePath = path + '/StarWars10s-2C-48000-4SW.wav';
 let file = fs.openSync(filePath, fs.OpenMode.READ_ONLY);
-let currStat = await fs.stat(path);
-let buf = new ArrayBuffer(bufferSize);
-let len = currStat.size % bufferSize == 0 ? Math.floor(currStat.size / bufferSize) : Math.floor(currStat.size / bufferSize + 1);
-for (let i = 0;i < len; i++) {
+fs.stat(path).then((stat) => {
+  let buf = new ArrayBuffer(bufferSize);
+  let len = stat.size % bufferSize == 0 ? Math.floor(stat.size / bufferSize) : Math.floor(stat.size / bufferSize + 1);
+  for (let i = 0;i < len; i++) {
       let options = {
         offset: i * bufferSize,
         length: bufferSize
@@ -4930,7 +4932,8 @@ for (let i = 0;i < len; i++) {
       } catch(err) {
          console.error(`audioRenderer.write err: ${err}`);
       }   
-}
+  }
+});
 ```
 
 ### getAudioTime<sup>8+</sup>