JavaScript function arguments for filter function -

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numbers = [1,2,3,4,5,4,3,2,1];  var filterresult = numbers.filter(function(i){     return (i > 2); });

i don't understand how works. if omit function argument breaks function isn't tied why need there?

.filter (array.prototype.filter) calls supplied function 3 arguments:

function(element, index, array) {     ...
  • element particular array element call.
  • index current index of element
  • array array being filtered.

you can use or of arguments.

in case, i refers element , used in body of function:

function(i){     return (i > 2); }

in other words, "filter elements element greater 2".


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