Question

I currently am matching user input as follows:

user_input = "upload a file"

if ( "upload a file".indexOf(user_input.toLowerCase()) > -1 ) {}

This work fine but the problem is, it matches “a file” which I don’t want. I want it to only match if the beginning is correct.

This should match:

"upload"
"u"
"upload a"

This should not match, because the string does not match from the start:

"a"
"file"

Are there any suggestions on how to make this happen with indexOf?

Answer 1

indexOf return the index of the match, so if you want to test if it match at the beginning just check if it returns 0

user_input = "upload a file"
if ( "upload a file".indexOf(user_input.toLowerCase()) == 0 ) {}