Use string method supported in ie11 (closes #3221) (#3223)
Use string method supported in ie11 (closes #3221) (#3223)

Signed-off-by: Stéphane Klein <4cfe1b926cc8098afb5a1bc59a456a6d6df123b9@gmail.com>
HewlettPackard/grommet,grommet/grommet,HewlettPackard/grommet,grommet/grommet,HewlettPackard/grommet,grommet/grommet