From 59f184d74d33b735b7f2339b320e860819586366 Mon Sep 17 00:00:00 2001
From: Allen <ayu780129@hotmail.com>
Date: Sat, 22 Jun 2019 14:45:53 +0800
Subject: [PATCH] fix #971 (#986)

---
 .../src/components/multiselect.js                  | 14 ++++++++++++--
 1 file changed, 12 insertions(+), 2 deletions(-)

diff --git a/packages/react-bootstrap-table2-filter/src/components/multiselect.js b/packages/react-bootstrap-table2-filter/src/components/multiselect.js
index 2de86f9..66ad4a0 100644
--- a/packages/react-bootstrap-table2-filter/src/components/multiselect.js
+++ b/packages/react-bootstrap-table2-filter/src/components/multiselect.js
@@ -18,8 +18,18 @@ function optionsEquals(currOpts, prevOpts) {
   return Object.keys(currOpts).length === Object.keys(prevOpts).length;
 }
 
-const getSelections = container =>
-  Array.from(container.selectedOptions).map(item => item.value);
+const getSelections = (container) => {
+  if (container.selectedOptions) {
+    return Array.from(container.selectedOptions).map(item => item.value);
+  }
+  const selections = [];
+  const totalLen = container.options.length;
+  for (let i = 0; i < totalLen; i += 1) {
+    const option = container.options.item(i);
+    if (option.selected) selections.push(option.value);
+  }
+  return selections;
+};
 
 class MultiSelectFilter extends Component {
   constructor(props) {