Comments on: JavaScript WTF http://lucumr.pocoo.org/cogitations/2008/04/24/javascript-wtf/ Armin Ronacher thinking Sat, 11 Oct 2008 11:59:23 +0000 http://wordpress.org/?v=2.2 By: schmichael http://lucumr.pocoo.org/cogitations/2008/04/24/javascript-wtf/#comment-4217 schmichael Fri, 25 Apr 2008 15:32:46 +0000 http://lucumr.pocoo.org/cogitations/2008/04/24/javascript-wtf/#comment-4217 I've always just used the + operator to coerce strings to ints: +"09" == 9 +"0100" == 100 Is there some advantage to parseInt? I’ve always just used the + operator to coerce strings to ints:

+”09″ == 9
+”0100″ == 100

Is there some advantage to parseInt?

]]> By: Jj http://lucumr.pocoo.org/cogitations/2008/04/24/javascript-wtf/#comment-4128 Jj Thu, 24 Apr 2008 19:20:41 +0000 http://lucumr.pocoo.org/cogitations/2008/04/24/javascript-wtf/#comment-4128 I got this message in the Javascript console in Firefox 3b5 for eval('09') """ Warning: 09 is not a legal ECMA-262 octal constant Source File: javascript:%20eval('09') Line: 1 Source Code: 09 """ While parseInt('09') just displayed "0" silently, so it does recognize the error I got this message in the Javascript console in Firefox 3b5 for eval(’09′)
“”"
Warning: 09 is not a legal ECMA-262 octal constant
Source File: javascript:%20eval(’09′)
Line: 1
Source Code:
09
“”"

While parseInt(’09′) just displayed “0″ silently, so it does recognize the error

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