JavaScript Search For Certain String

Question

I am trying to find a certain string within an array.

This is my code so far:

function getUserName(arrayName){
for (counter = 0 ; counter < arrayName.length ; counter++){
    check = arrayName[counter].search("Jon");

    if (check != -1){
          result = arrayName[counter];
    }               
    break;
  }
}

The problem that I am running into is that if there is a name above Jon in the array (e.g Jon_111) the result would be Jon_111 and not Jon

What do I use to tell it to only find and return if it is exactly Jon.

instead of using search, why don't you simply do `arrayName[counter] === "Jon"`? — Liora Haydont, May 08 '18 at 17:10
You can literally Google the title, and find multiple guides / questions on the same topic. Try Google first, next time. — Thomas Darvik, May 08 '18 at 17:13
@thomas sorry for my comment ... You are totally right with your dupe :) — Jonas Wilms, May 08 '18 at 17:15
Yeah, no problem. The `object` part of it is of course true, but it is still covered in the duplicate :) — Thomas Darvik, May 08 '18 at 17:16

score 1 · Answer 1 · answered May 08 '18 at 17:12

1

You can use find() to find an array's element (or just indexOf(), depending on use case). To get an exact result only, use ===

let index = arrayName.indexOf('Jon');
// or
let element = arrayName.find(e => e === 'Jon');

answered May 08 '18 at 17:12

baao

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Ahh... I see now. Not used to seeing `===`, thanks for the info. – JDoeeeee May 08 '18 at 17:19

score 0 · Answer 2 · answered May 08 '18 at 17:10

Why don't just === ?

  function getUserName(arrayName){
for (counter = 0 ; counter < arrayName.length ; counter++){
    check = arrayName[counter]==="Jon";

    if (check === true){
          result = arrayName[counter];
    }               
    break;
  }
}

JavaScript Search For Certain String

2 Answers2