From 9ee63e7993b33ada5e8634de5ff9c4c9fa1799b4 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?C=C3=A9dric=20Krier?= <ced@b2ck.com>
Date: Fri, 11 Oct 2019 12:06:14 +0200
Subject: [PATCH] Use typeof instead of instanceof to test for string

All strings are not instance of String.

issue8706
---
 src/common.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/common.js b/src/common.js
index 7a241a869d..2a541296c9 100644
--- a/src/common.js
+++ b/src/common.js
@@ -1740,7 +1740,7 @@
                     }
                     if (~['integer', 'float', 'numeric', 'datetime', 'date',
                             'time'].indexOf(field.type)) {
-                        if ((value instanceof String) && value.contains('..')) {
+                        if ((typeof value == 'string') && value.contains('..')) {
                             var values = value.split('..', 2);
                             var lvalue = this.convert_value(field, values[0]);
                             var rvalue = this.convert_value(field, values[1]);