Flash Lite 1.1子串問題

Question

你能告訴我爲什麼兩行都打印出來a？
trace(substring("asd", 0, 1)); // == "a"
trace(substring("asd", 1, 1)); // == "a"
（這打印出s：
trace(substring("asd", 2, 1)); // == "s"）

在Flash精簡版

不1.X指數從1開始？

Answer 1

摘自 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.