CODEWITHSUNDEEP
javascriptxmle4x
Jason S
Jason S

Reputation: 189796

e4x: simplest way to tell if an attribute exists

What's the simplest way to tell if an attribute exists?

p = <abc name="foo" />;


js>[email protected]()
1
js>[email protected]()
0

I can use @attr.length() but was wondering if there is an isAttributePresent() or something.

NOTE: This is not in a browser, this is just a javascript interpreter based on core Mozilla Javascript 1.8 with E4X enabled.

Upvotes: 2

Views: 706

Answers (1)

Gabriele Petrioli
Gabriele Petrioli

Reputation: 196187

You can use 

'@name' in p

This will return true or false depending on existence of said attribute.

Upvotes: 4

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