using regular expressions to retrieve specific values from a given string

I need assistance with parsing strings that have a specific format. The string looks like this:

Size: 1243 MB Amount: 2,239 Value: 1,569 Info: 1Z31LZ

Currently, I split the string on : and replace some names to extract the values I need. However, I believe there must be a more efficient way to achieve this using an expression or function. Ideally, I would like the extracted values to be stored in an array like this

['1243','MB','2,239','1,569','1Z31LZ']

If anyone can provide guidance on how to do this, I would greatly appreciate it!

Answer №1

let details = "Length: 10 inches Width: 5.6 cm Height: 7.2 in Weight: 3.8 lbs Color: Blue".match(/^Length: (.+) inches Width: (.+) cm Height: (.+) in Weight: (.+) lbs Color: (.+)$/g);

An array similar to this is returned:

["10", "inches", "5.6", "7.2", "3.8", "Blue"]

Answer №2

After some experimentation, I've come up with the following solution:

(?<!\w+:)([A-Za-z,1-9]+)+

A negative lookbehind is used to ensure that anything followed by a colon is not included in the match.

The text highlighted above shows what is captured by this regex pattern.

Size: 987 MB Amount: 3,145 Value: 2,879 Info: 4Y62ML

Edit I nearly forgot to include a + for proper matching.

To verify that it works correctly in Javascript, here's a sanity check:

console.log("Size: 987 MB Amount: 3,145 Value: 2,879 Info: 4Y62ML".match(/(?<!\w+:)([A-Za-z,1-9]+)+/g));

Output:

["987", "MB", "3,145", "2,879", "4Y62ML"]

Answer №3

/Quantity: (\d+) ([A-Za-z]+) Cost: ([\d,]+) Price: ([\d,]+) Details: ([\d\w]+)/

I attempted to increase the restrictions, but I might have inadvertently removed something important for you. Bagonyi's solution will offer more flexibility.

The data will be organized into groups 1-5

Answer №4

One potential solution could be:

str = 'Size: 1243 MB Amount: 2,239 Value: 1,569 Info: 1Z31LZ';
arr = str.split(/[^: ]+: *| +/).filter(Boolean);
//=> ["1243", "MB", "2,239", "1,569", "1Z31LZ"]

Answer №5

What if we try this:

str="Values: 1243 MB, 2,239, 1,569, Code: 1Z31LZ";
str.split(/\s*\S*:\s+/).filter(Boolean);

The result would be:

["1243 MB", "2,239", "1,569", "1Z31LZ"]

Although it's not an exact match with the expected output, we can avoid splitting on "MB" as per your preference.

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