javascript去重

var arr=[1,2,4,6,2,3,3,3,5,6,"6"]; var res =[]; res.push(arr[0]); for(var i=0;i<arr.length;i++){ var flag=false; for(var j=0;j<res.length;j++){ if(res[j] ===arr[i]){ flag=true; break; } } if(!flag){ res.push(arr[i]); } } console.log(res)