JavaScript - Extract a specific word from a given string

Question

JavaScript - Extract a specific word from a given string

I am dealing with a string that looks like this:

const myString = '[12m[99mSOME STRING 1: [bla[bla[88mSOMETHING 2[00m['

My goal is to extract "SOME STRING 1" and "SOMETHING 2" from this string and store them in separate variables. The string will always have the same structure, except for the parts containing "SOME STRING 1" and "SOMETHING 2".

Since the specific content of "SOME STRING 1" and "SOMETHING 2" may vary, I cannot simply use includes('SOME STRING 1') here.

The first needed string is everything between [99m and :.

The second needed string is everything between [88m and [.

Desired outcome:

const string1 = 'SOME STRING 1'
const string2 = 'SOMETHING 2'

javascript string split

Answer 1

Answer №1

regex = /\[99m([^:]+).*?\[88m([^[]+)/
myString = '[12m[99mSOME TEXT 1: [dummy[dummy[88mMORE TEXT 2[00m['
match = regex.exec(myString)
if (match) {
  var [ ignoreThis, text1, text2 ] = match
}

console.log("text1", text1)
// "SOME TEXT 1"
console.log("text2", text2)
// "MORE TEXT 2"

Explanation:

\[99m // Search for the exact string "[99m"
(...) // Capture the matching expression inside parentheses
[^:]+ // Match one or more characters until a ":" is encountered
.*?   // Match all characters lazily until the next match
\[88m // Search for the exact string "[88m"
(...) // Capture the matching expression inside parentheses
[^[]+ // Match one or more characters until a "[" is found

The result of exec will be null or an array with 3 elements. The first element can be disregarded, while the subsequent two represent the captured strings in the parentheses.

Note: This assumes that the first string does not contain a ":" and the second string does not contain a "[" character.

Test this online

Answer 2

regex = /\[99m([^:]+).*?\[88m([^[]+)/
myString = '[12m[99mSOME TEXT 1: [dummy[dummy[88mMORE TEXT 2[00m['
match = regex.exec(myString)
if (match) {
  var [ ignoreThis, text1, text2 ] = match
}

console.log("text1", text1)
// "SOME TEXT 1"
console.log("text2", text2)
// "MORE TEXT 2"

Explanation:

\[99m // Search for the exact string "[99m"
(...) // Capture the matching expression inside parentheses
[^:]+ // Match one or more characters until a ":" is encountered
.*?   // Match all characters lazily until the next match
\[88m // Search for the exact string "[88m"
(...) // Capture the matching expression inside parentheses
[^[]+ // Match one or more characters until a "[" is found

The result of exec will be null or an array with 3 elements. The first element can be disregarded, while the subsequent two represent the captured strings in the parentheses.

Note: This assumes that the first string does not contain a ":" and the second string does not contain a "[" character.

Test this online

JavaScript - Extract a specific word from a given string

Answer №1

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