数组去重复的方法有哪些
1.使用 set
functionuniquearray(array){ let unique_array=Array.from(set(array))returnunique_array;}
2.使用 filter
functionunque_array(arr){letunique_array = arr.filter(function(elem, index, self){returnindex == self.indexOf(elem); })returnunique_array;}console.log(unique_array(array_with_duplicates));
3.使用 for 循环
Arraydups_names = ['Ron','Pal','Fred','Rongo','Ron'];functiondups_array(dups_names){ let unique = {}; names.forEach(function(i){If(!unique[i]) { unique[i] =true; } });returnObject.keys(unique);}// Ron, Pal, Fred, RongoDups_array(names);
