Junior Developer Central JS Practice Exercise - 06

 

Question: 

Write a Javascript program to create a new string from a given string taking the first 3 characters and the last 3 characters of a string 'and adding them together. The string length must be 3 or more, if not, the original string is returned. 

Answer: 

function stringFormat (str) {

let str001 = str; 

if (str001.length < 3) {

return str001; 

} else {

let str002 = str001.slice(0, 3); 

let str003 = str001.slice(-3); 

let finalString = str002+str003; 

console.log(finalString);

}

} 

> we declare a function 'stringFormat' 

> it has one parameter 'str' 

> we create a variable str001 and initialize it with the argument 'str'

> we then open an if/else statement to check if the length of the 'str001' is less than 3

> if it is less than 3 then we want the function to return the 'str001' variable 

> if it is 3 or more than 3 then we slice the str001 twice 

>> our first slice is saved in variable 'str002' and slices the first 3 characters of the string

>> our second slice is saved in variable 'str003' and slices the last 3 characters of the string

> we then create another variable 'finalString' 

> and initialize it with a value we get by concatenating the variables 'str002' and 'str003'