ecmascript 6 - how to remove character from array using filters and map? -


i trying remove specific characters array. passing sentence,characters sentence should removed alpha array using map() , filters(),

var alpha =['b','c','d','e','f','g','h','a']             function removealpha(sentence){                 return alpha.map(function(melem,mpos,marr){                     return sentence.tolowercase().split("").filter(function(elem,pos,arr){                         melem!=elem                     });                 });              }              console.log(removealpha('bdog'));

please let me know ,what doing wrong

the inner callback function not return value. melem!=elem should return melem!=elem

after correction inner filter returns array 1 alpha letter removed it, letter. in next iteration of outer map, start scratch , return array second alpha letter removed, etc... gives array of arrays, in each array 1 of alpha characters removed.

yet, need different: want characters alpha array not in sentence (instead of characters of sentence not in alpha array).

for should apply filter on alpha:

var alpha =['b','c','d','e','f','g','h','a']  function removealpha(sentence){      return alpha.filter(function(melem){          return !this.includes(melem);      }, sentence.tolowercase());  }    console.log(removealpha('bdog'));


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