CODEWITHSUNDEEP
javascript
Genadinik
Genadinik

Reputation: 18639

How to tell what is inside a Javascript object

I have an object. If I just do an alert on it, it shows this: [object HTMLInputElement] but doesn't show the value. If I do this

document.getElementById('rout_markers').value

then it shows nothing. Does that mean it isn't set at all? Whats the best way to check if it is null?

Upvotes: 0

Views: 223

Answers (3)

Darin Dimitrov
Darin Dimitrov

Reputation: 1038730

FireBug is very good for this purpose. It has a logging console where you can inspect/debug javascript. So:

console.log(document.getElementById('rout_markers'));

and then enjoy the results in the console. It will contain answers to your questions.

Upvotes: 4

Dogbert
Dogbert

Reputation: 222118

If you're on Firefox (Firebug) or Google Chrome, you can do 

console.log(document.getElementById('rout_markers'));

Upvotes: 3

jondavidjohn
jondavidjohn

Reputation: 62392

I'm assuming this is for debugging purposes

In that case I would suggest using

console.log(object);

This prints out a collapsable/expandable tree view of the entire object into your javascript console (firebug, chrome console, etc...)

Upvotes: 3

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