Re: [jQuery] How do I check for the existence of an object?

2007-02-23 Thread Klaus Hartl 
Daemach schrieb:
 I want to create a global object to store some settings in, but only if it
 doesn't exist already.  If it doesn't exist and I try to use something like
 if (myObj == 'undefined') myObj = new Object();  I get an error saying the
 object is not defined.
 
 Yeah I should know stuff like this ;)

You have to use the typeof operator:

if (typeof myObj == 'undefined') myObj = new Object();


But I would write that as follows anyway:

var myObj = myObj || {};



-- Klaus




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Re: [jQuery] How do I check for the existence of an object?

2007-02-23 Thread Mike Alsup 
 if (myObj == 'undefined') myObj = new Object();  I get an error saying the
 object is not defined.

Try this instead:

if (typeof myObj = 'undefined') myObj = {};

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Re: [jQuery] How do I check for the existence of an object?

2007-02-23 Thread Blair Mitchelmore 
You can do (typeof myObj == 'undefined') and I think you can also do 
(myObj == undefined) thanks to the completely mind-blowing line of code 
at the beginning of jQuery
window.undefined = window.undefined;

-blair

Daemach wrote:
 I want to create a global object to store some settings in, but only if it
 doesn't exist already.  If it doesn't exist and I try to use something like
 if (myObj == 'undefined') myObj = new Object();  I get an error saying the
 object is not defined.

 Yeah I should know stuff like this ;)


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Re: [jQuery] How do I check for the existence of an object?

2007-02-23 Thread Daemach 

Thanks all!



Daemach wrote:
 
 I want to create a global object to store some settings in, but only if it
 doesn't exist already.  If it doesn't exist and I try to use something
 like if (myObj == 'undefined') myObj = new Object();  I get an error
 saying the object is not defined.
 
 Yeah I should know stuff like this ;)
 

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