Regular expression to define a decimal number from 0.0 to 1.0

Question

I'm looking for a regex check expression to test if a decimal value (x) has the following: 0.0 <= x <= 1.0

Only one decimal place is allowed. How to do it?

thank

+3

Rifaz Rifky Feb 14 13 at 10:55

2 answers

The regular expression will look like this:

^(:?(:?0\.[0-9])|(:?1\.0))$

But why not use a decimal comparison?

+3

Chris seymour Feb 14 At 10:59 am

Dis Shishkov · Accepted Answer · 2013-02-14T12:01:35+0000

Try this, it will check one decimal place instead of other suggested options

^((0\.[0-9]{1})|(1\.0))$