CODEWITHSUNDEEP
javascript
Paul Baiju
Paul Baiju

Reputation: 419

Convert a string to array of number and alphabets

var string;
var splitstring = string.split("????");

my string is 12BLG123 i need the array splitstring to have elements 12,BLG,123 (The alphabets and numbers randomly vary)

Upvotes: 0

Views: 71

Answers (3)

shawon191
shawon191

Reputation: 1955

const string = `12BLG123`
const splitString = string.split(/(\d+)/).filter(i => i)

console.log(splitString)

The regex splits the string by numeric strings. Since split doesn't include the value that it is being split by, we use the capturing syntax to include the numeric strings. Empty strings are introduced if the string starts or ends with numeric strings so we use filter(i => i) to remove the empty strings (it works because empty strings are falsey values in javascript).

Upvotes: 4

Ayman El Temsahi
Ayman El Temsahi

Reputation: 2610

Though not regex or split, but you can do something like this,

var str = "12BLG123";

var result = [].reduce.call(str, (acc, a) => {
    if (!acc.length) return [a];    // initial case
    let last = acc[acc.length - 1];
    // same type (digit or char)
    if (isNaN(parseInt(a, 10)) == isNaN(parseInt(last.charAt(0), 10))) 
        acc[acc.length - 1] = last + a;
    // different type
    else acc.push(a);
    // return the accumulative
    return acc;
}, [] /* the seed */);

console.log(result);

Upvotes: 2

Randhawa
Randhawa

Reputation: 226

This regex will probably work.

var splitString = string.split("[^A-Z0-9]+|(?<=[A-Z])(?=[0-9])|(?<=[0-9])(?=[A-Z])");

Upvotes: 0

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