Flash Lite 1.1子串问题

Question

你能告诉我为什么两行打印出a吗？ trace(substring("asd", 0, 1)); // == "a"
trace(substring("asd", 1, 1)); // == "a"
（此打印出s：
trace(substring("asd", 2, 1)); // == "s"）

在Flash Lite 1.x中，索引是否以1开始？

Answer 1

摘录自 http://www.adobe.com/support/flash/action_scripts/actionscript_dictionary/actionscript_dictionary701.html

Availability
Flash Player 4. This function has been deprecated in favor of String.substr .

Description
String function; extracts part of a string. This function is 1-based, 
whereas the String object methods are 0-based.