IE9 javascript undefined errors

Question

I tried fixing my application to work on IE9 browser (with IE9 standards mode).

However I am getting some undefined javascript errors..

I have the following piece of code in a js file.

1.

if(escape(String.fromCharCode(111)).toLowerCase() != "abc")

{

    //code

}

I get error 'escape' is undefined.

2. In some js files, I get errors "Array is undefined" for such piece of code

//1
function abc(){

this.abc = new Array();

}


//2

var cde = new Array
(

  "aaa","bb","cc",

  "dd","eee","ff",  

);

However these errors do not occur for IE8 standards mode and other modes.

Please let me know why these errors are coming and how to fix such errors.

Neil Bryson · Accepted Answer · 2011-11-04 12:20:30Z

2

While Ryan's answer fixes the issue, the problem here is the trailing comma;

"dd","eee","ff",

answered Nov 4, 2011 at 12:20

Neil Bryson

3072 silver badges12 bronze badges

Sign up to request clarification or add additional context in comments.

Comments

Ryan · Accepted Answer · 2011-04-24 06:58:26Z

0

Instead of using new Array(...), can you simply say...

this.abc = [];

and...

var cde = ['aaa','bb','cc','dd','eee','ff'];

...?

answered Apr 24, 2011 at 6:58

Ryan

313 bronze badges

2 Comments

Girish Over a year ago

The can be many entries in cde (around 240) . What is IE9 expecting ? How to handle undefined for escape

Ryan Over a year ago

Regarding the escape() issue, I haven't encountered any undefined errors in trying to do what you illustrated. Maybe if you show the whole code snippet, things will become clearer.

Webveloper · Accepted Answer · 2012-08-07 22:29:23Z

0

Your abc function turns itself into an array object; this is window. Maybe the context of this has changed or was misunderstood somewhere, and the code is inadvertently redefining window or its properties. That could explain why globals like Array and escape are undefined. (Not sure why it would only affect IE9 standards mode, though.)

answered Aug 7, 2012 at 22:29

Webveloper

1,07910 silver badges15 bronze badges

Collectives™ on Stack Overflow

IE9 javascript undefined errors

3 Answers 3

Comments

2 Comments

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

3 Answers 3

Comments

2 Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Related