23 lines
615 B
JavaScript
23 lines
615 B
JavaScript
define(['./_getLength', './contains'], function (_getLength, contains) {
|
|
|
|
// Produce an array that contains every item shared between all the
|
|
// passed-in arrays.
|
|
function intersection(array) {
|
|
var result = [];
|
|
var argsLength = arguments.length;
|
|
for (var i = 0, length = _getLength(array); i < length; i++) {
|
|
var item = array[i];
|
|
if (contains(result, item)) continue;
|
|
var j;
|
|
for (j = 1; j < argsLength; j++) {
|
|
if (!contains(arguments[j], item)) break;
|
|
}
|
|
if (j === argsLength) result.push(item);
|
|
}
|
|
return result;
|
|
}
|
|
|
|
return intersection;
|
|
|
|
});
|