I am currently trying to write a regex in js that would extract the decimal numbers from a mixed string.
Example strings are following
mixed string123,456,00indeed mixed string123,456.00indeed mixed string123,4indeed mixed string123,40indeed mixed string 1,0 mixed string 1,00indeed mixed string 1,00.00indeed
My desired output is following
123,456,00 123,456.00 123,4 123,40 1,0 1,00 1,00.00
If I run the following regex
(d+,)+(.)+(d+)
it doesnot return any match when the decimal point is followed by a single digit.Eg. following cases
mixed string123,4indeed mixed string 1,0
I am not sure how to tune the regex that works for all such cases. If someone can please help me would be very helpful. The full js here
var str='mixed string123,4indeed'; str.match(/(d+,)+(.)+(d+)/gm);
Also I am getting this in regex101 which I am not sure how to decipher
A repeated capturing group will only capture the last iteration. Put a capturing group around the repeated group to capture all iterations or use a non-capturing group instead if you're not interested in the data
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Answer
You can use
/d+(?:,d+)*(?:.d+)?/g
See the regex demo.
Details:
d+– one or more digits(?:,d+)*– zero or more occurrences of a comma and one or more digits(?:.d+)?– an optional occurrence of a dot and one or more digits.
See the JavaScript demo:
var texts = ['mixed string123,456,00indeed','mixed string123,456.00indeed','mixed string123,4indeed','mixed string123,40indeed','mixed string 1,0','mixed string 1,00indeed','mixed string 1,00.00indeed'];
var rx = /d+(?:,d+)*(?:.d+)?/g
for (var i=0; i<texts.length;i++) {
console.log(texts[i], '->', (texts[i].match(rx) || ["No match!"])[0]);
}