July 1998
Intermediate to advanced
1456 pages
65h 5m
English
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Name
substr() — NN 4 IE J3 ECMA n/a
Synopsis
substr(startPositionIndex[, length])
Returns a copy of an extract from the current string. The extract
begins at the zero-based index position of the current string as
specified by the first parameter of the method. If no other parameter
is provided, the extract continues to the end of the main string. The
second parameter can specify an integer of the number of characters
to be extracted from the main string. In contrast, the
substring() method’s parameters point to the
start and end position index values of the main string.
Returned Value
A string.
Parameters
-
startPositionIndex A zero-based integer indicating the position within the current string object to start copying characters
-
length An optional integer of the number of characters to extract, starting with the character indicated by the
startPositionIndexparameter
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.