How do I return a subset in jQuery plugin?

By default it's like this:

$.fn.ellipsis = function() {
...
return this.each(function(){
  //do some operation on each element here to see if it qualifies

}
}

But now I want to return a subset of all, only those qu开发者_如何学JAVAalify in this.each(function() {}),

how to modify the code so that it finally returns only those that qualify?

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Check out jQuery's filter function: http://api.jquery.com/filter/

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i would suggest using jquery.grep if your filtering mechanism is a function. makes it really easy to pull out just the items in the array that you need.