CODEWITHSUNDEEP
javascriptregex
Marvin
Marvin

Reputation: 123

How to replace string characters with only one blank space?

I'm trying to replace all "WUB" in a string with a blank space. The problem is, if I have 2 "WUB" in a row, it will return 2 blank spaces. How do only return 1 blank space if I have "WUBWUB"?

function songDecoder(song) {
    var replacedLyrics = song.replace(/#|WUB/g,' ');
    return replacedLyrics;
}

Upvotes: 0

Views: 424

Answers (3)

pwilcox
pwilcox

Reputation: 5753

/#|WUB/g should be /#|(WUB)+/g for your purpose. Do you also want to replace multiple "#"s with a single space. Then you might want /(#|WUB)+/g

The parentheses group the target strings together, then plus seeks one or more repetition of the group.

If you don't want a space at the beginning or end of your string, that could be another regex function, but probably the most straightforward method is to use the .trim() function. So:

alert(
    songDecoder('WUBYOUREWUBWELCOMEWUB')
)
 
function songDecoder(song) {
    var replacedLyrics = song.replace(/(#|WUB)+/g,' ').trim();
    return replacedLyrics;
}

Upvotes: 0

Cid
Cid

Reputation: 15247

Try this regex /(WUB)+/g it will match 1 or more element in the parenthesis

function songDecoder(song)
{
    var replacedLyrics = song.replace(/(WUB)+/g,' ');
    return (replacedLyrics);
}

console.log(songDecoder("hello world !"));
console.log(songDecoder("WUB"));
console.log(songDecoder("helloWUBWUBworldWUB!"));

Upvotes: 3

T. Dirks
T. Dirks

Reputation: 3676

Change your code to .replace(/#|(WUB)+/g, " ");.

This searches for as many "WUB's" in a row before replacing them with a blank space

Upvotes: 0

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