Replace all spaces in a string with '+'

Question

I have a string that contains multiple spaces. I want to replace these with a plus symbol. I thought I could use

var str = 'a b c';
var replaced = str.replace(' ', '+');

but it only replaces the first occurrance. How can I get it replace all occurrances?

Answer 1

You need the /g (global) option, like this:

var replaced = str.replace(/ /g, '+');

You can give it a try here. Unlike most other languages, JavaScript, by default, only replaces the first occurrence.

Answer 2

Use a regular expression with the g modifier:

var replaced = str.replace(/ /g, '+');

From Using Regular Expressions with JavaScript and ActionScript:

/g enables "global" matching. When using the replace() method, specify this modifier to replace all matches, rather than only the first one.

Answer 3

You need to look for some replaceAll option

str = str.replace(/ /g,”+”);

this is a regular expression way of doing a replaceAll .If you want a simple solution.

function ReplaceAll(Source,stringToFind,stringToReplace){

  var temp = Source;

    var index = temp.indexOf(stringToFind);

        while(index != -1){

            temp = temp.replace(stringToFind,stringToReplace);

            index = temp.indexOf(stringToFind);

        }

        return temp;

}

String.prototype.ReplaceAll = function(stringToFind,stringToReplace){

    var temp = this;

    var index = temp.indexOf(stringToFind);

        while(index != -1){

            temp = temp.replace(stringToFind,stringToReplace);

            index = temp.indexOf(stringToFind);

        }

        return temp;

    }

Answer 4

var str = 'a b c';
var replaced = str.replace(/\s/g, '+');

Answer 5

Here's an alternative that doesn't require regex:

var str = 'a b c';
var replaced = str.split(' ').join('+');