CODEWITHSUNDEEP
javascriptregexreplace
s_kamianiok
s_kamianiok

Reputation: 473

Regex remove underscores from a given string

I try to transform string using String replace method and regular expression. How can I remove underscores in a given string?

let string = 'court_order_state'
string =  string.replace(/_([a-z])/g, (_, match) => match.toUpperCase())
console.log(string)

Expected result: 

COURT ORDER STATE

Upvotes: 2

Views: 2259

Answers (5)

The fourth bird
The fourth bird

Reputation: 163352

In your code you could match either and underscore or the start of the string (?:_|^) to also match the first word and match 1+ times a-z using a quantifier [a-z]+

Then append a space after each call toUpperCase. 

let string = 'court_order_state';
string = string.replace(/(?:_|^)([a-z]+)/g, (m, g1) => g1.toUpperCase() + " ");
console.log(string)

Upvotes: 1

Pranjal Nadhani
Pranjal Nadhani

Reputation: 106

Instead of matching the first character just after every _ and making them uppercase (from the regex that you have used), you can simply convert the entire string to uppercase, and replace the _ with space by the following:

let string = 'court_order_state';
string = string.toUpperCase().replace(/_+/g, " ");
console.log(string);

Upvotes: 0

cmprogram
cmprogram

Reputation: 1884

It can be as simple as the below:

let string = 'court_order_state'
    string = string.replace(/_/g, ' ').toUpperCase();
    console.log(string);

Here the 'g' represents global, whereas the '/' is surrounded by what we're looking for.

Upvotes: 0

Axel Amthor
Axel Amthor

Reputation: 11096

let string = 'court_order_____state'
string =  string.replace(/_+/g, ' ').toUpperCase()
console.log(string)

Upvotes: 0

Alessio Cantarella
Alessio Cantarella

Reputation: 5201

You could use JavaScript replace function, passing as input:

  • /_/g as searchvalue parameter (the g modifier is used to perform a global match, i.e. find all matches rather than stopping after the first one);
  • (blank space) as newvalue parameter.

let string = 'court_order_state'
string = string.replace(/_/g, ' ').toUpperCase();
console.log(string);

Upvotes: 3

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