var arr1=[1,2,3,4,2,3,1,4,4];
function post() {
var n=[];
for(var i=0;i<arr1.length;i++){
if(n.indexOf(arr1[i])==-1){
n.push(arr1[i])
}
}
console.log(n)
}
post(arr1);
var arr1=[1,2,3,4,2,3,1,4,4];
var page=[];
for(var i=0;i<arr1.length;i++){
if(page.indexOf(arr1[i])==-1){
page.push(arr1[i])
}
}
console.log(page);