CODEWITHSUNDEEP
typescript
Nick
Nick

Reputation: 77

Match string and return matched string with typescript

Problem

I have some strings containing this symbol "#" and I want to get numbers after this symbol. For example:

A) Lorem Ipsum #1234 --> #1234

B) Lorem #234 Ipsum Dolor --> #234

What I tried

    getTicketID(title: string): string {
    const re = /#(\d+)/g;
    return title.match(re); 
}

but it doesn't work because I can't return a string:

Type 'RegExpMatchArray' is not assignable to type 'string'.

Upvotes: 1

Views: 1846

Answers (2)

baao
baao

Reputation: 73251

You should simply return the first capturing group only. Additionally you can check for a match, and return a default value in case of no match, like an empty string or whatever you prefer.

const s = "Lorem #234 Ipsum Dolor";

function getTicketID(title: string): string {
  const m = title.match(/#(\d+)/);
  return m ? m[1] : "default value"; 
}

console.log(getTicketID(s));

Upvotes: 0

ArunKumar M N
ArunKumar M N

Reputation: 1266

It is returning array. you change like this

getTicketID(title: string): string[] {
const re = /#(\d+)/g;
return title.match(re); 
}

then print the array

this.getTicketID(this.data).forEach(value=>console.log(value));

Upvotes: 1

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