Another fantastic tip. Thank you.
Klaus Hartl wrote:
>
> Daemach wrote:
>> I'm trying to sort out a problem with a selector and I'm not having much
>> luck. I'm using firebug at the moment, but I'm not able to easily see
>> what
>> the selector is picking up, if anything. The first selector is here:
>>
>> $('#test :textarea').before('Current length: <span id="'+ this.id
>> +'_len">'+this.value.length+'</span> characters')
>>
>> <form action="boo" name="test" id="test">
>> <textarea cols="54" rows="5" id="Desc_512"
>> name="Description">SPORK</textarea>
>> </form>
>>
>> BTW the documentation doesn't show a :textarea selector in the form
>> section
>> - should that be added or is that where I'm going wrong? I've tried
>> using
>> $("#Desc_512") as well and I'm still getting a "this.value has no
>> properties" error. I'm not sure it's grabbing the right element :/
>>
>> It would be insanely useful to write a doc talking about tools and code
>> snippets you could use to troubleshoot jquery stuff. Debugging hooks,
>> like
>> being able to pause and dump data (array contents, current dom element,
>> etc)
>> between chained functions would be great too. I'm a visual guy so being
>> able
>> to use something like dump()
>
> If you already use FireBug, nothing easier than that...:
>
> console.log( $('#test :textarea') );
>
> I often do that first if something is wrong and I'm not sure if my
> selector is correct. The complete object (in this case the jQuery
> object) is logged to the console and you can than click on it to further
> inspect the object.
>
> This also works pretty well with DOM objects:
>
> console.log( $('#test')[0] );
>
> A click on that logged element takes you directly to the DOM inspector
> to where the particular element is located in the tree. Saves you
> searching from body down and let's you easily check if newly elements
> are added in the correct plaze.
>
> -- Klaus
>
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>
>
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