Javascript String Map Function

So since you're returning a boolean value, the list you'll end up with is a list of bools. Delete() removes a map element specified by the key: Javascript string slice () slice () extracts a part of a string and returns the extracted part in a new string.

So how can i map alternate cities name to correct one using javascript. Step 3 — rendering lists in javascript libraries Another variable named “input” takes an input string that needs transformation.

Function getmapvalue(str1,str2){.} i dont mind joining the two strings into one long string and use the function with the long string.

So since you're returning a boolean value, the list you'll end up with is a list of bools. The callback function () is called on each array element, and the map () method always passes the current element, the index of the current element, and the whole array object to it. Another variable named “input” takes an input string that needs transformation. Const nums = [25, 125, 75, 200];