How can I split the word by numbers but also keep the numbers in Node.js?

Question

I would like to split a word by numbers, but at the same time keep the numbers in node.js.

For example, take this following sentence:

var a = "shuan3jia4";

What I want is:

"shuan3 jia4"

However, if you use a regexp's split() function, the numbers that are used on the function are gone, for example:

s.split(/[0-9]/)

The result is:

[ 'shuan', 'jia', '' ]

So is there any way to keep the numbers that are used on the split?

Answer 1

You can use match to actually split it per your requirement:

var a = "shuan3jia4";
console.log(a.match(/[a-z]+[0-9]/ig));

Answer 2

use parenthesis around the match you wanna keep

see further details at Javascript and regex: split string and keep the separator

var s = "shuan3jia4";
var arr = s.split(/([0-9])/);
console.log(arr);

Answer 3

var s = "shuan3jia4";
var arr = s.split(/(?<=[0-9])/);
console.log(arr);

This will work as per your requirements. This answer was curated from @arhak and C# split string but keep split chars / separators

As @codybartfast said, (?<=PATTERN) is positive look-behind for PATTERN. It should match at any place where the preceding text fits PATTERN so there should be a match (and a split) after each occurrence of any of the characters.

Answer 4

Split, map, join, trim.

const a = 'shuan3jia4';

const splitUp = a.split('').map(function(char) {
    if (parseInt(char)) return `${char} `;
    return char;
});

const joined = splitUp.join('').trim();

console.log(joined);