709. Convert to lowercase letters

Implement the function toLowerCase (), which receives a string parameter, str, and converts the uppercase letters in the string to lowercase letters, and then returns a new string.

Example 1:

Input: "Hello"

Output: "Hello"

Example 2:

Input: "Here"

Output: "Here"

Example 3:

Input: "Lovely"

Output: "Lovely"

1varLower =' ABCDEFGHIJKLMNOPQRSTUVWXYZ '
2varUpper =' ABCDEFGHIJKLMNOPQRSTUVWXYZ '
3
4varFind = function (s, Target){
5varL = s.length
6if(S.includes (target)) {
7 for(varI=0; i<l; i++) {
8if(S[i] = = target)returnI
9}
Ten}
 Onereturn -1
 A}
 -
 -vartoLowerCase = function (str){
 thevarR ="'
 -
 - for(vari =0; i < str.length; i++) {
 -//uppercase is converted to lowercase
 +if(Upper.includes (Str[i])) {
 -varIDX = Find (upper, str[i])
 +R + = Lower[idx]
 A}Else{
 at//is the lower case directly splicing up
 -R + = Str[i]
 -}
 -}
 -returnR
 -}

709. Convert to lowercase letters