I would like to filter an array of items by using the map()
function. Here is a code snippet:
var filteredItems = items.map(function(item)
{
if( ...some condition... )
{
return item;
}
});
The problem is that filtered out items still uses space in the array and I would like to completely wipe them out.
Any idea?
EDIT: Thanks, I forgot about filter()
, what I wanted is actually a filter()
then a map()
.
EDIT2: Thanks for pointing that map()
and filter()
are not implemented in all browsers, although my specific code was not intended to run in a browser.
You should use the filter
method rather than map unless you want to mutate the items in the array, in addition to filtering.
eg.
var filteredItems = items.filter(function(item)
{
return ...some condition...;
});
[Edit: Of course you could always do sourceArray.filter(...).map(...)
to both filter and mutate]