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Start your free trialKim B
4,991 PointsHow to trim a user's input?
I'm sure this will be covered later, but it came to mind now. In this video, we see the necessity of adding a space in a concatenated string to make our final message legible. However, what about if a user erroneously adds a space at the end of their name, for example? Is there a trim function (er, command... method?) we can apply to our prompt()
method to account for that?
1 Answer
Steven Parker
231,269 PointsStrings do in fact have a method named "trim" that will remove extra spaces from both the beginning and end.
For example:
let sloppy = " sample ";
let neaten = sloppy.trim(); // will be "sample" (no spaces)
Kim B
4,991 PointsKim B
4,991 PointsSo how would I apply this to creating a variable
name
from a user's input in theprompt()
method? Would it go liiiiike...const name = trim( prompt("What's your name?") );
ooooor
const name = prompt.trim("What's your name?");
oooorrr
const name = prompt("What's your name?");
And then whenever I wanted to ... call? on the
name
variable, I'd usename.trim()
?Or maybe do like what you did and have
const rawName = prompt("Your name?");
and then create something likeconst name = rawName.trim();
?I suspect I'm getting ahead of myself here, but I must know! lol
Steven Parker
231,269 PointsSteven Parker
231,269 Points"Trim" doesn't take an argument, but "prompt" does, so:
const name = prompt("What's your name?").trim();
Your last example would also work, and would be good if you needed to keep the input intact for some reason.