var arr = ['0', '1', '2', '3', '0']; function rep(arr){ var new_arr = [arr[0]]; for (var i = 0; i < arr.length; i++) { if(new_arr.indexOf(arr[i]) == -1 ){ new_arr.push(arr[i]); } } return new_arr; } rep(arr); //["0", "1", "2", "3"]
Array deduplication
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