CODEWITHSUNDEEP
javascriptarrays
musicmaster988
musicmaster988

Reputation: 41

How to split alphanumeric string but keep last alpha value javascript

I had a question regarding splitting alphanumeric characters. Say I have an array that looks like the following: 

var arr = ["Z100X", "RT540X", "3001X", "YRT560X"];

How do I split the characters in this array so that the array ends up like this:

var arr = ["Z", "100X", "RT", "540X", "3001X", "YRT", "560X"]

I was thinking about using a general expression like this

arr.replace(/[\d]+/, ","+/[\d]+/);

But not sure how to keep the "X" character at the end attached to the number.

Any help would be greatly appreciated! Thanks.

Upvotes: 1

Views: 950

Answers (4)

Sri Dasari
Sri Dasari

Reputation: 42

  • symbole is not required at the end of Regex. It is like alpha or alphabet which starts with digits.

var arr = ["Z100X", "RT540X", "3001X", "YRT560X"];
var res = arr.toString().match(/[A-Z]+|\d+[A-Z]/g);
console.log(res);

Upvotes: 1

Redu
Redu

Reputation: 26161

You may also do as follows;

var arr = ["Z100X", "RT540X", "3001X", "YRT560X"],
result  = arr.reduce((r,s) => r.concat(s.match(/[A-Z]+|\w+/g)),[]);
console.log(result);

Upvotes: 1

guest271314
guest271314

Reputation: 1

You can use .toString(), .match() with RegExp /[A-Z]+|\d+[A-Z]+/g to match one or more A-Z or one or more digits followed by one or more A-Z.

The RegExp is intended to match for example "Z" or "RT" or "YRT" : [A-Z]+, or, "100X" or "3001X" : \d+[A-Z]+; the g flag is for purpose of returning all matches found.

var arr = ["Z100X", "RT540X", "3001X", "YRT560X"];
var res = arr.toString().match(/[A-Z]+|\d+[A-Z]+/g);
console.log(res);

Upvotes: 4

blex
blex

Reputation: 25634

You can use .split() with a regex matching [a bunch of letters] followed by [any non-empty String]:

var arr = ["Z100X", "RT540X", "3001X", "YRT560X"],
    arr2 = [];

for(var i=0, l=arr.length; i<l; i++) {
  var parts = arr[i].split(/([A-Z]+)(.+)/).filter(Boolean);
  arr2.push.apply(arr2, parts);
}

console.log(arr2);

Here, .filter(Boolean) is used to remove empty Strings from the Array.

Upvotes: 1

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