How to split string with multiple semi colons javascript

Question

I have a string like below

var exampleString = "Name:Sivakumar ; Tadisetti;Country:India"

I want to split above string with semi colon, so want the array like

var result = [ "Name:Sivakumar ; Tadisetti", "Country:India" ]

But as the name contains another semi colon, I am getting array like

var result = [ "Name:Sivakumar ", "Tadisetti", "Country:India" ]

Here Sivakumar ; Tadisetti value of the key Name

I just wrote the code like exampleString.split(';')... other than this not able to get an idea to proceed further to get my desired output. Any suggestions?

Logic to split: I want to split the string as array with key:value pairs

What is the logic that defines which ; to split at ? There are 2 semi-colons in your string. — Gabriele Petrioli
– Gabriele Petrioli, Commented Apr 26, 2020 at 18:17
@GabrielePetrioli I want to split the string with key:value pairs — Sivakumar Tadisetti
– Sivakumar Tadisetti, Commented Apr 26, 2020 at 18:19
@GabrielePetrioli key doesn't contains semicolons, but value may contain more than one semicolon ex: Name:Sivakumar ; Tadisetti, Country:India — Sivakumar Tadisetti
– Sivakumar Tadisetti, Commented Apr 26, 2020 at 18:25

Gabriele Petrioli · Accepted Answer · 2020-04-26 18:39:12Z

3

Since .split accepts regular expressions as well, you can use a one that matches semicolons that are only followed by alphanumeric characters that end in : (in effect if they are followed by another key)

/;(?=\w+:)/

var exampleString = "Name:Sivakumar ; Tadisetti;Country:India";
var result = exampleString.split(/;(?=\w+:)/);
console.log(result)

edited Apr 26, 2020 at 18:39

answered Apr 26, 2020 at 18:34

Gabriele Petrioli

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1 Comment

Mechanic Over a year ago

dude; nice and clean.

Mechanic · Accepted Answer · 2020-04-26 18:42:31Z

1

here is an approach which we first split the input on ; and then concat the element without : with the previous one; since it shouldn't being spited.

let exampleString = "Name:Sivakumar ; Tadisetti;Country:India"
let reverseSplited = exampleString.split(";").reverse();

let prevoiusString;
let regex = /[^:]+:.*/;

let result = reverseSplited.map( str => {
  if(regex.test(str)) {
    if(prevoiusString){
     let returnValue = str + ";" + prevoiusString;
     prevoiusString = null;
     return returnValue
    }
    return str
  }
  prevoiusString = str;
}).filter(e=>e);


console.log(result);

answered Apr 26, 2020 at 18:42

Mechanic

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