<s>
Ext	B-Language
JS	I-Language
is	O
a	O
JavaScript	B-Language
application	B-Application
framework	I-Application
for	O
building	O
interactive	O
cross-platform	O
web	B-Application
applications	I-Application
using	O
techniques	O
such	O
as	O
Ajax	B-General_Concept
,	O
DHTML	B-General_Concept
and	O
DOM	B-General_Concept
scripting	I-General_Concept
.	O
</s>
<s>
It	O
can	O
be	O
used	O
as	O
a	O
simple	O
component	O
framework	O
(	O
for	O
example	O
,	O
to	O
create	O
dynamic	O
grids	O
on	O
otherwise	O
static	O
pages	O
)	O
but	O
also	O
as	O
a	O
full	O
framework	O
for	O
building	O
single-page	B-Application
applications	I-Application
(	O
SPAs	O
)	O
.	O
</s>
<s>
Originally	O
built	O
as	O
an	O
add-on	O
library	O
extension	O
of	O
YUI	B-Language
by	O
Jack	O
Slocum	O
on	O
April	O
15	O
,	O
2007	O
,	O
Ext	B-Language
JS	I-Language
has	O
had	O
no	O
dependencies	O
on	O
external	O
libraries	O
beginning	O
with	O
version	O
1.1	O
.	O
</s>
<s>
Nowadays	O
,	O
Ext	B-Language
JS	I-Language
can	O
be	O
used	O
both	O
as	O
a	O
single	O
script	O
(	O
with	O
all	O
classes	O
and	O
components	O
in	O
one	O
file	O
)	O
or	O
by	O
building	O
the	O
application	O
with	O
the	O
Sencha	O
Cmd	O
.	O
</s>
<s>
Ext	B-Language
JS	I-Language
includes	O
a	O
set	O
of	O
GUI-based	O
form	O
controls	O
(	O
or	O
"	O
widgets	O
"	O
)	O
for	O
use	O
within	O
web	B-Application
applications	I-Application
:	O
</s>
<s>
Ext	B-Language
JS	I-Language
comes	O
in	O
two	O
flavours	O
called	O
modern	O
and	O
classic	O
toolkit	O
.	O
</s>
<s>
They	O
differ	O
not	O
only	O
with	O
available	O
themes	O
but	O
there	O
are	O
also	O
some	O
API	B-General_Concept
differences	O
between	O
them	O
.	O
</s>
<s>
There	O
are	O
plans	O
to	O
even	O
out	O
some	O
differences	O
between	O
the	O
toolkits	O
in	O
Ext	B-Language
JS	I-Language
7.1	O
,	O
which	O
is	O
planned	O
for	O
2019	O
.	O
</s>
<s>
Ext	B-Language
JS	I-Language
is	O
a	O
composition	O
of	O
classes	O
that	O
has	O
many	O
capabilities	O
.	O
</s>
<s>
Ext	B-Language
JS	I-Language
has	O
its	O
own	O
class	O
system	O
.	O
</s>
<s>
Classes	O
are	O
defined	O
with	O
Ext.define	O
and	O
then	O
an	O
instance	O
can	O
be	O
created	O
with	O
Ext.create	O
.	O
</s>
<s>
MyApp.views.ProductsTable	O
would	O
extend	O
built-in	O
Ext.grid.Panel	O
)	O
.	O
</s>
<s>
There	O
are	O
two	O
types	O
of	O
dependencies	O
in	O
ExtJS	B-Language
.	O
</s>
<s>
Ext	B-Language
JS	I-Language
version	O
2.0	O
was	O
released	O
on	O
4	O
December	O
2007	O
.	O
</s>
<s>
Also	O
promoted	O
were	O
the	O
new	O
user	O
documentation	O
,	O
API	B-General_Concept
documentation	O
,	O
and	O
samples	O
.	O
</s>
<s>
Ext	B-Language
JS	I-Language
2.0	O
did	O
not	O
provide	O
a	O
backward	O
compatibility	O
with	O
version	O
1.1	O
.	O
</s>
<s>
Ext	B-Language
JS	I-Language
version	O
3.0	O
was	O
released	O
on	O
6	O
July	O
2009	O
.	O
</s>
<s>
This	O
version	O
added	O
communication	O
support	O
for	O
REST	B-Protocol
and	O
a	O
new	O
Ext.Direct	O
server	O
side	O
platform	O
.	O
</s>
<s>
Version	O
4.0	O
of	O
the	O
Ext	B-Language
framework	O
was	O
released	O
on	O
April	O
26	O
,	O
2011	O
.	O
</s>
<s>
It	O
includes	O
a	O
completely	O
revised	O
class	O
structure	O
,	O
a	O
revised	O
data	O
package	O
,	O
an	O
animation	O
and	O
drawing	O
package	O
that	O
uses	O
SVG	B-Application
and	O
VML	B-Language
,	O
and	O
revised	O
charting	O
and	O
theming	O
.	O
</s>
<s>
Version	O
5.0	O
of	O
the	O
Ext	B-Language
JS	I-Language
framework	O
was	O
released	O
on	O
June	O
2	O
,	O
2014	O
.	O
</s>
<s>
Ext	B-Language
JS	I-Language
5	O
also	O
includes	O
an	O
upgraded	O
touch-optimized	O
charting	O
package	O
along	O
with	O
additional	O
financial	O
charting	O
capabilities	O
.	O
</s>
<s>
Ext	B-Language
JS	I-Language
5	O
supports	O
modern	O
and	O
legacy	O
browsers	O
including	O
:	O
Safari	O
6+	O
,	O
Firefox	O
,	O
IE8+	O
,	O
Chrome	O
,	O
and	O
Opera	O
12+	O
.	O
</s>
<s>
On	O
the	O
mobile	O
platform	O
,	O
Ext	B-Language
JS	I-Language
5	O
supports	O
Safari	O
on	O
iOS	O
6	O
and	O
7	O
,	O
Chrome	O
on	O
Android	O
4.1	O
+	O
,	O
and	O
Windows	O
8	O
touch-screen	O
devices	O
(	O
such	O
as	O
Surface	O
and	O
touch-screen	O
laptops	O
)	O
running	O
IE10+	O
.	O
</s>
<s>
Important	O
:	O
From	O
the	O
Ext	B-Language
JS	I-Language
5	O
version	O
you	O
cannot	O
buy	O
license	O
for	O
fewer	O
than	O
5	O
developers	O
.	O
</s>
<s>
Version	O
6.0	O
of	O
the	O
Ext	B-Language
JS	I-Language
framework	O
was	O
released	O
on	O
July	O
1	O
,	O
2015	O
.	O
</s>
<s>
It	O
merges	O
the	O
Sencha	B-Language
Touch	I-Language
(	O
mobile	O
)	O
framework	O
into	O
Ext	B-Language
JS	I-Language
.	O
</s>
<s>
Version	O
7.0	O
of	O
Ext	B-Language
JS	I-Language
framework	O
was	O
released	O
on	O
August	O
29	O
,	O
2019	O
.	O
</s>
<s>
Ext	B-Language
JS	I-Language
7.0	O
was	O
a	O
minor	O
release	O
.	O
</s>
<s>
The	O
Classic	O
Toolkit	O
received	O
the	O
Material	B-Application
Design	I-Application
Theme	O
.	O
</s>
<s>
On	O
15-Jun-2010	O
,	O
the	O
merge	O
of	O
Ext	B-Language
JS	I-Language
with	O
JQTouch	B-Language
and	O
Raphaël	B-Language
was	O
announced	O
forming	O
a	O
new	O
organisation	O
called	O
Sencha	O
Inc	O
.	O
Ext	B-Language
JS	I-Language
continues	O
to	O
be	O
available	O
as	O
a	O
main	O
product	O
on	O
the	O
new	O
Sencha	O
website	O
together	O
with	O
Sencha	B-Language
Touch	I-Language
,	O
Sencha	O
GWT	O
(	O
now	O
Sencha	O
GXT	O
)	O
,	O
Sencha	O
Architect	O
,	O
Sencha	O
Animator	O
and	O
Ext	B-Language
core	I-Language
.	O
</s>
<s>
Embarcadero	O
is	O
known	O
for	O
acquisitions	O
of	O
rapid	O
application	O
development	O
software	O
such	O
as	O
Delphi	B-Language
(	O
which	O
relies	O
on	O
Object	B-Language
Pascal	I-Language
as	O
its	O
primary	O
programming	O
language	O
)	O
.	O
</s>
<s>
Ext.NET	O
is	O
an	O
ASP.NET	B-Application
component	O
framework	O
integrating	O
the	O
Ext	B-Language
library	O
,	O
current	O
version	O
(	O
as	O
of	O
September	O
2017	O
)	O
is	O
4.4	O
which	O
integrates	O
ExtJS	B-Language
version	O
6.5.1	O
.	O
</s>
<s>
YUI-Ext	O
was	O
available	O
under	O
the	O
BSD	B-Operating_System
license	I-Operating_System
.	O
</s>
<s>
In	O
April	O
2008	O
,	O
the	O
open	O
source	O
license	O
associated	O
with	O
Ext	B-Language
was	O
changed	O
.	O
</s>
<s>
In	O
version	O
2.0.2	O
,	O
the	O
authors	O
stated	O
that	O
Ext	B-Language
was	O
available	O
under	O
an	O
LGPL-style	O
license	O
as	O
long	O
as	O
you	O
"	O
plan	O
to	O
use	O
Ext	B-Language
in	O
a	O
personal	O
,	O
educational	O
or	O
non-profit	O
manner	O
"	O
or	O
"	O
in	O
an	O
open	O
source	O
project	O
that	O
precludes	O
using	O
non-open	O
source	O
software	O
"	O
or	O
"	O
are	O
using	O
Ext	B-Language
in	O
a	O
commercial	O
application	O
that	O
is	O
not	O
a	O
software	O
development	O
library	O
or	O
toolkit	O
"	O
.	O
</s>
<s>
This	O
was	O
no	O
longer	O
the	O
case	O
with	O
Ext	B-Language
2.1	O
.	O
</s>
<s>
The	O
Ext	B-Language
authors	O
claim	O
that	O
section	O
7	O
of	O
the	O
LGPL	B-Application
as	O
it	O
is	O
worded	O
did	O
not	O
apply	O
to	O
"	O
conditions	O
"	O
which	O
their	O
license	O
required	O
before	O
distribution	O
under	O
the	O
LGPL	B-Application
was	O
permitted	O
as	O
opposed	O
to	O
"	O
additional	O
restrictions	O
"	O
,	O
which	O
section	O
7	O
allowed	O
a	O
distributor	O
to	O
remove	O
.	O
</s>
<s>
On	O
20	O
April	O
2008	O
,	O
Ext	B-Language
2.1	O
was	O
released	O
under	O
a	O
new	O
dual	O
license	O
structure	O
which	O
allowed	O
the	O
options	O
of	O
the	O
full	O
GPL	O
3.0	O
license	O
or	O
a	O
proprietary	O
license	O
.	O
</s>
<s>
The	O
change	O
in	O
license	O
over	O
time	O
,	O
from	O
a	O
permissive	O
open	O
source	O
license	O
to	O
a	O
restrictive	O
dual	O
license	O
,	O
caused	O
controversy	O
in	O
the	O
Ext	B-Language
user	O
community	O
.	O
</s>
<s>
In	O
November	O
2018	O
Sencha	O
announced	O
its	O
Community	O
Edition	O
that	O
is	O
free	O
but	O
restricted	O
by	O
annual	O
revenue	O
of	O
either	O
a	O
person	O
or	O
company	O
using	O
ExtJS	B-Language
.	O
</s>
