Answered
I have come across the following regular expression being applied to strings:
.replace(/\s+/g, " ")
What does this do?
It finds each instance of a double space (or more) in a string and replaces it with a single space.
Here's an example:
let string = " A string with many spaces. ";
string = string.replace(/\s+/g, " ");
// string = " A string with many spaces. "
Notice that any double, triple, etc. space is converted into a single space.
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It replaces all double or more spaces with a single space.
You can examine the regular expression here: https://regexr.com/6llhq.
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It finds any whitespace with two or more spaces and replaces it with a single space.
A breakdown:
\s: matches any whitespace in the string.+: quantifier that matches any whitespace greater than one spaceg: modifier that specifies a global match. So all matches are found (not just the first).
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