dojo/fx.js needs a type check to avoid error in less than IE8.

[chrisacky]

This issue seems too only effect versions of Internet Explorer 7/8.

When chaining animations together, even when you set an duration, and *even* though there is a default duration on all animations, IE7/8 seems to fail when performing some animations.

Error Message:

SCRIPT5007: Unable to get value of the property 'duration': object is null or undefined fx.js, line 47 character 4

The simple fix is to add a typeof check in dojo/fx.js to make sure that duration exists.

For instance replace (on line 47):

this.duration += a.duration;
if(a.delay){ this.duration += a.delay; }

With this:

 if(a && typeof a.duration != "undefined"){
        this.duration += a.duration;
 }
 if(a && a.delay){
   this.duration += a.delay;
  }

[dylan]

I hope to get to this ticket in time for 1.11 (setting a deadline of end of January). If not, this will get moved to 1.12.

[dylan]

Fixed in:

• master ​https://github.com/dojo/dojo/commit/359c1e71baea11fa77cb8a530cd86aace6914c13
• 1.10 ​https://github.com/dojo/dojo/commit/7469d9bc103e835c00c44b2615a36fe63cd3479a
• 1.9 ​https://github.com/dojo/dojo/commit/c50804de484d4edb69acdb1e9d023a4498a9f434
• 1.8 ​https://github.com/dojo/dojo/commit/baaf7515a7590b07bfd192c7b78e8b1bd1b595e5
• 1.7 ​https://github.com/dojo/dojo/commit/1ca6f9d051b0d45f5da3d1191a2baf86578494c5