admin管理员组

文章数量:1316523

I get this error in the javascript debug panel when trying to call String.charCodeAt('9') in Safari 3.

TypeError: Result of expression 'String.charCodeAt' [undefined] is not a function.

When I try to do stringInstance.charCodeAt('9') instead, I get NaN. Am I doing something wrong? I'd just like to get the char code for some characters to match against keypresses. String.charCodeAt('9') returns 57 (as expected) on Firefox.

I get this error in the javascript debug panel when trying to call String.charCodeAt('9') in Safari 3.

TypeError: Result of expression 'String.charCodeAt' [undefined] is not a function.

When I try to do stringInstance.charCodeAt('9') instead, I get NaN. Am I doing something wrong? I'd just like to get the char code for some characters to match against keypresses. String.charCodeAt('9') returns 57 (as expected) on Firefox.

Share Improve this question asked Oct 9, 2009 at 6:32 readonlyreadonly 356k109 gold badges206 silver badges206 bronze badges
Add a ment  | 

1 Answer 1

Reset to default 5

I think the proper way is:

"9".charCodeAt(0)

or stringInstace.charCodeAt(charIndex) where charIndex is an integer

本文标签: javascriptStringcharCodeAt undefinedStack Overflow