how do I figure out what is_image means in file.is_image in javascript?q
<p>I'm using a plugin in wich file.is_image is used. Somewhere, I reckon is_image ought to be defined. How do I find out what it is defined to?</p>

<p>I'd reckon it should be something like "$is_image =" or something like that, I'm not great with javascript syntax etc.</p>
