doc: fix exec example in child_process

Previously, the example was checking for error by strict equality to null. The error could be undefined though which would fail that check. PR-URL: #6660 Reviewed-By: Myles Borins <[email protected]> Reviewed-By: Jeremy Whitlock <[email protected]>
nodejs · May 17, 2016 · 520369d · 520369d
1 parent 51d1960
commit 520369d
Showing 1 changed file with 7 additions and 7 deletions.
diff --git a/doc/api/child_process.md b/doc/api/child_process.md
@@ -140,13 +140,13 @@ generated output.
 
 ```js
 const exec = require('child_process').exec;
-const child = exec('cat *.js bad_file | wc -l',
-  (error, stdout, stderr) => {
-    console.log(`stdout: ${stdout}`);
-    console.log(`stderr: ${stderr}`);
-    if (error !== null) {
-      console.log(`exec error: ${error}`);
-    }
+exec('cat *.js bad_file | wc -l', (error, stdout, stderr) => {
+  if (error) {
+    console.error(`exec error: ${error}`);
+    return;
+  }
+  console.log(`stdout: ${stdout}`);
+  console.log(`stderr: ${stderr}`);
 });
 ```