Does anyone know a way to extract numbers from a string in JavaScript?
Example:
1 banana + 1 pineapple + 3 oranges
My intent is to have the result in an array or JSON or something else.
Result:
[1,1,3]
-
1Strings usually have quotes, so it's good to add them so there's no ambiguity about where the bytes are. Voting to close due to no attempt.ggorlen– ggorlen2022-07-19 21:30:55 +00:00Commented Jul 19, 2022 at 21:30
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3 Answers
var result= "1 banana + 1 pineapple + 3 oranges";
result.match(/[0-9]+/g)
Comments
Using String.prototype.match() and parseInt():
const s = "1 banana + 1 pineapple + 3 oranges";
const result = (s.match(/\d+/g) || []).map(n => parseInt(n));
console.log(result);
answered Mar 1, 2017 at 13:02
Robby Cornelissen
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3 Comments
raychz
This solution breaks if the string does not contain a number. The answer by @Amrutha is safest and does not strictly assume that the string has to contain a number.
Robby Cornelissen
@raychz Updated my answer to address cases where the string doesn't contain numbers. The solution by Amrutha that you're recommending doesn't extract numbers at all, it extracts numerical strings.
ggorlen
In ES6 you can use
s.match(/\d+/g)?.map(Number). Slight difference from the answer here: you get undefined rather than [] when there are no matches.Use this regex
- / -> start
- \d+ -> digit
- /g -> end and g for global match
var str = "1 banana + 1 pineapple + 3 oranges",
mats = [];
str.match(/\d+/g).forEach(function(i, j) {
mats[j] = parseInt(i);
});
console.log(mats);
