从数组中获取唯一值

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[mw_shl_code=javascript,true]const array = [1, 1, 1, 3, 3, 2, 2];

var unique = array.filter((element, index) => {
  return array.indexOf(element) === index;
});

//unique.toString();
for(var i=0;i<unique.length;i++){
        console.log(unique+"\r\n<br>");
}[/mw_shl_code]