Consider we have a string with a lot of white spaces.
const str = 'this is a big old string';
We can use the
replace() method to remove the white spaces from an entire string.
const str = 'this is a big old string'; str.replace(/\s/gi , '') //"thisisabigoldstring"
In the above code, we have passed two arguments to
replace() method the first one is regular expression
/\s/gi and the second one is empty string
'', so that the
replace() will replace the all white-spaces with an empty string(no space).
Similarly, we can also use the following regular expression.
const str = 'this is a big old string'; str.replace(/\W/gi , '') //"thisisabigoldstring"