Page({
data:{
list:
[
{alphabet:
'Top',
datas:
['asome','aentries','are
here']},
{alphabet:
'A',
datas:
['asome','aentries','are
here']},
{alphabet:
'B',
datas:
['bbsome','bebntries','bare
here']},
{alphabet:
'C',
datas:
['csome','centries','care
here']},
{alphabet:
'D',
datas:
['dsome','dentries','dare
here']},
{alphabet:
'E',
datas:
['esome','eentries','eare
here']},
{alphabet:
'F',
datas:
['fsome','fentries','are
here']},
{alphabet:
'G',
datas:
['gsome','gentries','gare
here']},
{alphabet:
'H',
datas:
['hsome','hentries','hare
here']},
{alphabet:
'I',
datas:
['isome','ientries','iare
here']},
{alphabet:
'J',
datas:
['jsome','jentries','jare
here']},
{alphabet:
'K',
datas:
['ksome','kentries','kare
here']},
{alphabet:
'L',
datas:
['lsome','lentries','lare
here']},
{alphabet:
'M',
datas:
['msome','mentries','mare
here']},
{alphabet:
'N',
datas:
['nsome','nentries','nare
here']},
{alphabet:
'O',
datas:
['osome','oentries','oare
here']},
{alphabet:
'P',
datas:
['psome','pentries','pare
here']},
{alphabet:
'Q',
datas:
['qsome','qentries','qare
here']},
{alphabet:
'R',
datas:
['rsome','rentries','rare
here']},
{alphabet:
'S',
datas:
['some','sentries','sare
here']},
{alphabet:
'T',
datas:
['tsome','tentries','tare
here']},
{alphabet:
'U',
datas:
['usome','uentries','uare
here']},
{alphabet:
'V',
datas:
['vsome','ventries','vare
here']},
{alphabet:
'W',
datas:
['wsome','wentries','ware
here']},
{alphabet:
'X',
datas:
['xsome','xentries','xare
here']},
{alphabet:
'Y',
datas:
['ysome','yentries','yare
here']},
{alphabet:
'Z',
datas:
['zsome','zentries','zare
here']},
],
alpha:
'',
windowHeight:
''
},
onLoad(options){
try
{
var
res =
wx.getSystemInfoSync()
this.pixelRatio
=
res.pixelRatio;
//
this.apHeight =
32
/
this.pixelRatio;
//
this.offsetTop =
160
/
this.pixelRatio;
this.apHeight
=
16;
this.offsetTop
=
80;
this.setData({windowHeight:
res.windowHeight +
'px'})
}
catch (e)
{
}
},
handlerAlphaTap(e)
{
let
{ap}
=
e.target.dataset;
this.setData({alpha:
ap});
},
handlerMove(e)
{
let
{list}
=
this.data;
let
moveY =
e.touches[0].clientY;
let
rY =
moveY -
this.offsetTop;
if(rY
>=
0)
{
let
index
=
Math.ceil((rY
-
this.apHeight)/
this.apHeight);
if(0
<=
index
<
list.length)
{
let
nonwAp =
list[index];
nonwAp
&&
this.setData({alpha:
nonwAp.alphabet});
}
}
}
})
