[docs] Refactor CheckboxesGroup to support IE11 (#13316)

mui · Oct 20, 2018 · 79444f1 · 79444f1
1 parent c26a0c8
commit 79444f1
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/docs/src/pages/demos/selection-controls/CheckboxesGroup.js b/docs/src/pages/demos/selection-controls/CheckboxesGroup.js
@@ -31,7 +31,7 @@ class CheckboxesGroup extends React.Component {
   render() {
     const { classes } = this.props;
     const { gilad, jason, antoine } = this.state;
-    const error = Object.values(this.state).filter(v => v).length !== 2;
+    const error = [gilad, jason, antoine].filter(v => v).length !== 2;
 
     return (
       <div className={classes.root}>