Javascript 字符之间单词的正则表达式

Question

As the title states, I tried making regex for %George%<Croissant>|2|10.3$

The point is it has to match only the name between the both % and the product between both <> and then the numbers between |

However, if the name doesn't start with capital letters followed by only lowercase letters, it is invalid hence not matched. The regex I made is:

/%(?<name>[AZ][az]*)%<(?<product>[A-Za-z]*)>\|(?<quantity>(\d+))\|(?<price>(\d+\.\d*\$))/g

• This is a match %George%<Croissant>|2|10.3$ (has proper name between the % which has a capital letter start start and followed to the end by lowercase letters), product (the product is between the < and >), a number between both | and final number (which is the final number and has to have $ in order to be valid)

• This does NOT match %InvalidName%<Croissant>|2|10.3$ (because the name is invalid)

• This does NOT match %Peter%<Gum>1.3$ (missing number from both |, it has to have 2 numbers.

Tested at regex101 and it matches only %George%<Croissant>|2|10.3$ .

%Valid%<Valid>valid|10|valid20$ is valid too because it has a Proper name (1 capital letter followed by only lowercase letters, has product which is < Valid >, has number between | 10 | and has a number at the end |valid 20$

Answer 1

To match both patterns, you can match optional word characters \w*\| before the pipe at group quantity , and match optional word chars without digits y>(\d+)) before group price .

To match both prices, you have to make the decimal part optional, because the pattern that you tried expects at least 1 or more digits and a dot using \d+\.\d*

You can also omit the extra capture group in quantity as the digits are already in a named capture group.

%(?<name>[A-Z][a-z]*)%<(?<product>[A-Za-z]*)>\w*\|(?<quantity>\d+)\|[^\W\d]*(?<price>(\d+(?:\.\d+)?\$))

Explanation

• %(?<name>[AZ][az]*)% Group name between % , match at least an uppercase char AZ and optional lowercase chars az
• <(?<product>[A-Za-z]*)> Group product Match optional chars A-Za-z
• \w*\| Match optional word characters, then match |
• (?<quantity>(\d+))
• \|[^\W\d]* Match optional word characters without the digits (to not overmatch the digits)
• (?<price>(\d+(?:\.\d+)?\$)) Group price, with an optional decimal part

Regex demo

Answer 2

Try this one

%(?<name>[A-Z][a-z]*?)%<(?<product>[A-Za-z]*)>[^|]*?\|(?<quantity>\d+)\|[^\d]*(?<price>\d+(?:\.\d+)*\$)