I have a big array of strings:
['{{Wanted Value}}', 'true', '{{Wanted Value}}', '{{Wanted Value}} unwanted {{Wanted Value}}', 'false'...]
I want to filter the array and extract every {{Wanted Value}}
substring to a new array. If the item in the array contains 2 or more of these substrings, I want to have each of them as a separate item. So the result of the above array would be:
['{{Wanted Value}}', {{Wanted Value}}', {{Wanted Value}}', {{Wanted Value}}']
I wrote the regex I want to use but not sure how to write the filter function correctly:
match(/\{\{(.+?)\}\}/)[0]
Thank you
You can try this approach
flatMap
is to collect all matched strings filter
is to get rid of empty results const data =['{{Wanted Value}}', 'true', '{{Wanted Value}}', '{{Wanted Value}} unwanted {{Wanted Value}}', 'false'] const result = data.flatMap(stringData => stringData.match(/\{\{(.+?)\}\}/g)).filter(stringData => stringData); console.log(result)
Here is a code which use reduce
and string match
function to filter the result
let r = ['{{Wanted Value}}', 'true', '{{Wanted Value}}', '{{Wanted Value}}', 'unwanted','{{Wanted Value}}', 'false']; const result = r.reduce((accumulator, current) => { return current.match(/\{\{(.+?)\}\}/)? accumulator.concat(current): accumulator; }, []); console.log(result);
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