How to remove string with specific value from a string using JavaScript?

Question

Suppose my string is like:

var str = "USA;UK;AUS;NZ"

Now from some a source I am getting one value like:

country.data = "AUS"

Now in this case I want to remove "AUS" from my string.

Can anyone please suggest how to achieve this.

Here is what I have tried:

var someStr= str.substring(0, str.indexOf(country.data))

In this case I got the same result.

Faly · Answer 1 · 2017-11-15T14:50:47.463

2

You can use split and filter:

var str = "USA;UK;AUS;NZ"
var toBeRemoved = "AUS";
var res = str.split(';').filter(s => s !== toBeRemoved).join(';');
console.log(res);

edited Nov 15 '17 at 14:50

answered Nov 15 '17 at 14:45

Faly

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In this case I left with two `;;` – David Nov 15 '17 at 14:47
I've updated, take a look – Faly Nov 15 '17 at 14:51
Thanks I am checking – David Nov 15 '17 at 14:53

osmanraifgunes · Answer 2 · 2017-11-15T14:53:02.090

2

Try this :

var result = str.replace(country.data + ';','');

Thanks to comments, this should work more efficently :

var tmp = str.replace(country.data ,''); 
var result = tmp.replace(';;' ,';');

edited Nov 15 '17 at 14:53

answered Nov 15 '17 at 14:45

osmanraifgunes

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This results in `'USA;UK;;NZ'`, leaving an orphaned delimiter. Yes, `AUS` is gone, but it's doubtful this is the desired output. – chazsolo Nov 15 '17 at 14:47
I edited. try now. – osmanraifgunes Nov 15 '17 at 14:48
you've still the case of the final value. Say you wanted to remove `NZ`... this would fail. – chazsolo Nov 15 '17 at 14:49
var result = str.replace(country.data ,''); var result2 = result .replace(';;' ,';'); This hould work. @ᴄʜaᴢsᴏʟᴏ – osmanraifgunes Nov 15 '17 at 14:50

score 2 · Answer 3 · answered Nov 15 '17 at 14:47

2

var str = "USA;UK;AUS;NZ"
console.log(str + " <- INPUT");
str = str.split(';');

for (let i = 0; i < str.length; i++) {
  if (str[i] == 'AUS') {
    str.splice(i, 1);
  }
}
console.log(str.join(';') + " <- OUTPUT");

answered Nov 15 '17 at 14:47

Dhaval Jardosh

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P.S. · Answer 4 · 2017-11-15T15:17:21.630

1

Here is a good old split/join method:

var str = "USA;UK;AUS;NZ;AUS";
var str2 = "AUS";
var str3 = str2 + ";";
console.log(str.split(str3).join("").split(str2).join(""));

edited Nov 15 '17 at 15:17

answered Nov 15 '17 at 14:45

P.S.

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In this case I left with two `;;` – David Nov 15 '17 at 14:47
@David, yes, but it's easy to solve, just add `+ ";"` to your second string. I have updated the answer. – P.S. Nov 15 '17 at 14:48
this fails if you want to remove the final value – chazsolo Nov 15 '17 at 14:53
@ᴄʜaᴢsᴏʟᴏ, updated – P.S. Nov 15 '17 at 15:17

score 1 · Answer 5 · answered Nov 15 '17 at 14:50

You can use replace() with a regex containing the searched country, this is how should be the regex /(AUS;?)/.

This is how should be your code:

var str = "USA;UK;AUS;NZ";
var country = "AUS";
var reg = new RegExp("("+country+";?)");
str = str.replace(reg, '');
console.log(str);

This will remove the ; after your country if it exists.

How to remove string with specific value from a string using JavaScript?

5 Answers5