August 1999
Intermediate to advanced
1488 pages
72h 53m
English
Content preview from Pure JavaScript
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String.charAt()
JavaScript1.0+, JScript1.0+, ECMAScript1.0+ NES2+, Nav2+, IE3+, Opera3+ Syntax
string.charAt(num)
Description
The charAt() method of an instance of the String object returns the character located at the indexed, num, position passed. This indexing is done from left to right starting with the 0 (zero) position. If the num passed is not a valid index in the string, –1 is returned.
Example
Listing 6.233 creates an instance of a String object. When the page is loaded, the user is prompted for an index number. After entering the index number and clicking OK, the character at that indexed location is written to the document. Notice that there is also a check to see if the character at that location is a space.
Listing 6.233 ...
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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.
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