Ext数字格式化

Ext.util.Format.number(v,format)

v     :要进行格式化的值
format:格式化字符串

0与#的区别：
0：在小数位数不够时会补零
#：在小数位数不够时不会补零

 1 Ext.util.Format.number(23456.789,'0,0.0000')
 2 "23,456.7890"
 3 Ext.util.Format.number(23456.789,'#,#.####')
 4 "23,456.789"
 5 
 6 Ext.util.Format.number(23456.789,'0,00.0000')
 7 "23,456.7890"
 8 Ext.util.Format.number(23456.789,'#,##.####')
 9 "23,456.789"
10 
11 Ext.util.Format.number(23456.789,'0,000.0000')
12 "23,456.7890"
13 Ext.util.Format.number(23456.789,'#,###.####')
14 "23,456.789"
15 
16 Ext.util.Format.number(23456.789,'0,0000.0000')
17 "23,456.7890"
18 Ext.util.Format.number(23456.789,'#,####.####')
19 "23,456.789"
20 
21 Ext.util.Format.number(23456.789123,'#,###.####')
22 "23,456.7891"
23 Ext.util.Format.number(23456.789123,'0,000.0000')
24 "23,456.7891"