Apply Functional Programming to Convert Strings to URL Slugs

Alright now with everything we’ve learned so far, let’s apply to another problem.

Many content management sites (CMS) have the titles of a post added to part of the URL for simple bookmarking purposes. For example, if you write a Medium pos…


This content originally appeared on DEV Community and was authored by Randy Rivera

Alright now with everything we've learned so far, let's apply to another problem.

  • Many content management sites (CMS) have the titles of a post added to part of the URL for simple bookmarking purposes. For example, if you write a Medium post titled Stop Using Reduce, it's likely the URL would have some form of the title string in it (.../stop-using-reduce).
  • Let's Fill in the urlSlug function so it converts a string title and returns the hyphenated version for the URL.
  • The input is a string with spaces and title-cased words
  • The output is a string with the spaces between words replaced by a hyphen (-)
  • The output should be all lower-cased letters
  • The output should not have any spaces 
// Only change code below this line
function urlSlug(title) {


}
// Only change code above this line
  • Answer: 
function urlSlug(title) {
return title
    .toLowerCase()
    .split(" ")
    .filter(str => str != "") // <-- basically saying if the str being passed is not equal to an empty string return that str
    .join("-")

}

console.log(urlSlug(" Winter Is Coming"))
  • urlSlug(" Winter Is Coming") returns the string winter-is-coming


This content originally appeared on DEV Community and was authored by Randy Rivera


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