August 1999
Intermediate to advanced
1488 pages
72h 53m
English
Content preview from Pure JavaScript
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File.getLength()
NES2+Syntax
file.getLength()
Description
The getLength() of the File object returns the number of characters in a text file or the number of bytes in a binary file. If the method is unsuccessful, –1 is returned.
Example
Listing 8.78 opens a file for reading and another file for writing. The getLength() method is used in a for loop to determine when to stop reading from the file.
Listing 8.78 Using the getLength() Method
<SERVER> // Open the files var myLog = new File("/data/logs/today.log"); var mySummary = new File("/data/logs/summary.log"); myLog.open("r"); mySummary.open("w"); // Write the contents of the log file to the page for(var i = 0; i <= myLog.getLength(); i++){ myBytes = File.byteToString(myLog.readByte()); ... |
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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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