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˵˵ÐèÇó°É£¬»ù±¾ÉϺܼòµ¥£¬¾ÍÊÇÄÜʶ±ðyyyymmdd¼°yymdÕâÑùµÄÈÕÆÚ¸ñʽ£¬»òÕßyy¡¢yyyy¡¢M¡¢MM¡¢d¡¢ddµÄÈÎÒâ×éºÏ¡£ÈçyyyyÄêMM
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//½«×Ö·û´®×ª»»ÎªÈÕÆÚ
String.prototype
.toDate
=
function
(
format)
{
pattern =
format.replace
(
"yyyy"
,
"(\~
1{4})"
)
.replace
(
"yy"
,
"(\~
1{2})"
)
.replace
(
"MM"
,
"(\~
1{2})"
)
.replace
(
"M"
,
"(\~
1{1,2})"
)
.replace
(
"dd"
,
"(\~
1{2})"
)
.replace
(
"d"
,
"(\~
1{1,2})"
)
.replace
(
/~1/g
,
"d"
)
;

 
var
returnDate;
if
(
new
RegExp(
pattern)
.test
(
this
)
)
{
var
yPos =
format.indexOf
(
"yyyy"
)
;
var
mPos =
format.indexOf
(
"MM"
)
;
var
dPos =
format.indexOf
(
"dd"
)
;
if
(
mPos ==
-
1
)
mPos =
format.indexOf
(
"M"
)
;
if
(
yPos ==
-
1
)
yPos =
format.indexOf
(
"yy"
)
;
if
(
dPos ==
-
1
)
dPos =
format.indexOf
(
"d"
)
;
var
pos =
new
Array(
yPos +
"y"
,
mPos +
"m"
,
dPos +
"d"
)
.sort
(
)
;
var
data =
{
y:
0
,
m:
0
,
d:
0
}
;
var
m =
this
.match
(
pattern)
;
for
(
var
i =
1
;
i &
lt;
m.length
;
i++
)
{

 


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