javascript - Extracting `<key>:<value>` pairs with regex - Stack Overflow

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there is a textarea and want to extract with key:value (something like below image)

I have a regex but not working as expected

/([^\s][a-zA-Z!]+:(\s)?"?([a-z0-9\s.]+)"?[^ $])/gi

if the user enters the below string at that time regex break the group key:value.

is:"browser" browser: "chrome 11.11 V" node: error type:"Error"

expected group:

is:"browser"
browser: "chrome 11.11 V"
node: error 
type:"Error"

there is a textarea and want to extract with key:value (something like below image)

I have a regex but not working as expected

/([^\s][a-zA-Z!]+:(\s)?"?([a-z0-9\s.]+)"?[^ $])/gi

if the user enters the below string at that time regex break the group key:value.

is:"browser" browser: "chrome 11.11 V" node: error type:"Error"

expected group:

is:"browser"
browser: "chrome 11.11 V"
node: error 
type:"Error"

• javascript
• regex

Share Improve this question Follow edited Nov 17, 2021 at 8:33 Archin Modi asked Nov 17, 2021 at 7:57 Archin ModiArchin Modi 51222 gold badges99 silver badges2020 bronze badges 4

• 1 Try /(\w+)=\s*(?:"([^"]*)"|(\S+))/ - Group 1 will contain the key, Group 2 or Group 3 will contain the value. – Wiktor Stribiżew Commented Nov 17, 2021 at 8:03
• @WiktorStribiżew not working, I've updated the question. – Archin Modi Commented Nov 17, 2021 at 8:11
• Replace = with : and it will work. – Wiktor Stribiżew Commented Nov 17, 2021 at 8:16
• See my answer proving it works. – Wiktor Stribiżew Commented Nov 17, 2021 at 8:46

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2 Answers 2

Sorted by: Reset to default 2

You can use

const text = 'is:"browser" browser: "chrome 11.11 V" node: error type:"Error"';
const re = /(\w+):\s*(?:"([^"]*)"|(\S+))/g;
let dict = {}, m;
while(m = re.exec(text)) {
  dict[m[1]]=(m[3] || m[2]);
}
console.log(dict);

// Or just get all matches:
console.log(text.match(re))

See the regex demo. Details:

• (\w+) - Group 1: one or more word chars
• : - a colon
• \s* - zero or more whitespaces
• (?:"([^"]*)"|(\S+)) - either of
  • "([^"]*)" - ", 0+ non-mas (captured in Group 2), "
  • | - or
  • (\S+) - Group 3: one or more non-whitespaces chars.

Regex:

/([a-zA-Z!]+:\s*[" ]?([a-z0-9\s.]+)[" $])/gi

Text:

sdfd:"dsffs" dsfd: "dsf demo" sfd: dsf fdsff:"fdsfsdf"

List:

sdfd:"dsffs"
dsfd: "dsf demo"
sfd: dsf 
fdsff:"fdsfsdf"

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