Regular expression for blood pressure
I have the following regex to validate blood pressure values as systolic / diastolic:
\b[0-9]{1,3}\/[0-9]{1,3}\b
The expression works with the only drawback that it allows more than one consecutive slash (/) to be used. For example, he allows it 2/2/2
. I want it to only allow number format from 1 to 999 and forward slash and then number from 1 to 999. For example 83/23, 1/123, 999/999, 110/80, etc. Can someone help me?
The only other expression I found here is : ^\b(29[0-9]|2[0-9][0-9]|[01]?[0-9][0-9]?)\\/(29[0-9]|2[0-9][0-9]|[01]?[0-9][0-9]?)$
but it doesn't work.
By the way, I am using jquery.
Thank.
Use ^
and $
to match the beginning and end of a line:
^\d{1,3}\/\d{1,3}$
So you bind strings that match exactly from this form.
Don't use word boundaries \b
because the forward slash is considered a word boundary.
Using ^
and / or $
is most likely your simplest solution. Unfortunately, if your input is part of a line or sentence, or occurs more than once in a line, etc., you think more about it.
Expanding on Blender's answer, here's a simple check to check the BP value in the format: 120/80:
if(/^\d{1,3}\/\d{1,3}$/.test(120/80)) {
console.log("BP Valid");
} else {
console.log("Invalid BP");
}