StringLength

[a] → [String(a).length]

• Action Code: 0x13
• Stack: 1 → 1
• SWF version: 4

Adobe documentation

ActionStringLength

ActionStringLength computes the length of a string.

Field	Type	Comment
ActionStringLength	ACTIONRECORDHEADER	ActionCode = 0x14

ActionStringLength does the following:

1. Pops a string off the stack.
2. Calculates the length of the string and pushes it to the stack.