How can I effectively eliminate all duplicate elements from a JavaScript array, such as the following:
var array = [55, 65, 55, 65, 55, 65, 55, 65, 55, 65];
In this particular case, I aim to get rid of all the repeated instances of 55 and 65, leaving me with only [55, 65].
I attempted utilizing splice(), but it is not suitable for removing all occurrences of a specific value, as it's based on position.
To optimize the array, consider filtering it and utilizing a hash table for fast look-up.
var arr = [22, 33, 22, 33, 22, 33, 22, 33, 22, 33, true, 'true'];
arr = arr.filter(function (item) {
var key = typeof item + '|' + item;
if (!this[key]) {
this[key] = true;
return true;
}
}, Object.create(null));
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