Someone explain this please

Question

Hello. Please can someone look at this code and explain to me what substring(0,2) means.
Also I saw splice(0,2) does same thing.
Please explain what substring and splice does.
https://code.sololearn.com/WP9otHuIt2m9/?ref=app

Answer 1

These explain better than me

https://www.w3schools.com/jsref/jsref_substring.asp

https://www.w3schools.com/jsref/jsref_slice_string.asp

Answer 2

splice or slice?

splice add or remove array items and the syntax is..
array.splice(positionOfArrayToStartAdding/Removing, howManyItems, itemToAdd1, ...)

slice and substring are basically the same.
but slice starts from the end of a string

Answer 3

KrOW Thanks a lot.
But is there now any major difference between the two? Or they actually do dame thing?

Answer 4

Hi,
Substring gets a part of an string.

string.substring(fromPosition, toPosition)

*toPosition: up to, but not including*

string index starts at position 0, so
substring(0, 2) extracts the two first characters of the string

Answer 5

Hi Guillem Padilla What's the difference between it and splice

Answer 6

A difference its that slice accept negative numbers, substring dont

Answer 7

Guillem Padilla Sorry to bother. But pls an example would be nice. Can you write a code implementing splice? Thanks

Answer 8

If you see on links that i have posted, you will find examples also