<script type="text/javascript">
function unique(arr){
var hash=[];
hash[arr[0]]=1;
for (var i=1;i<arr.length ;i++ )
{
if(hash[arr[i]]===undefined){
hash[arr[i]]=1
}
}
var keys=[],i=0;
for (keys[i++] in hash);
console.log(keys);
}
console.time('unique');
unique([20,50,20,40,50,10,20]);
console.timeEnd('unique');
</script>
转载请注明原文地址: https://www.6miu.com/read-32298.html
