Function filter() in jquery

Question

I study jquery, but i have a little confusion about this code :

var list = mylist.filter(function(f) {
    return $(f)
        .find('.anthing')
        .length > 0;
});

what does $(f) mean?

filter method loop through all elements in array and give you callback for each item to test, that callback parameter is item in the array — Nageshwar Reddy Pandem
– Nageshwar Reddy Pandem, Commented Aug 18, 2016 at 9:06

Suren Srapyan · Accepted Answer · 2016-08-18 09:07:56Z

2

Your mylist is an array or array like object. The f in the parameters is the single item in your myList.It calls the function for every item in the myList.Then it wraps your f into jQuery object and then the .find() will be visible on your object

edited Aug 18, 2016 at 9:07

answered Aug 18, 2016 at 9:05

Suren Srapyan

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4 Comments

Rayon Over a year ago

OP is asking what is f

Suren Srapyan Over a year ago

@Rayon He asks $(f) not f

Rayon Over a year ago

Isn't f part of $(f) ?

Suren Srapyan Over a year ago

I can know what is f but not what is $(f)

KAD · Accepted Answer · 2016-08-18 09:21:50Z

0

It is the index passed through the function, which indicates the 0-based position of the element within the unfiltered set of matched elements.

In your case $(f) is useless since it represent $(0) || $(1) which does not represent a selection.

answered Aug 18, 2016 at 9:21

KAD

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