javascript - Find and remove object in array by value in nested array -

i have array following structure:

var questions = [     {"answer":         ["a1", "a2", "a3"]     },     {"answer":         ["b1"]     },     {"answer":         ["c1", "c2"]     } ] 

i have array of objects below:

var answers = [     {"value": "a1"},     {"value": "a512"},     {"value": ""},     {} ]; 

for each object in answers (if it's not {}) find if corresponding value appears in object inquestions. if does, update counter variable , remove object questions. how achieve this?

try

var questions = [{     "answer": ["a1", "a2", "a3"] }, {     "answer": ["b1"] }, {     "answer": ["c1", "c2"] }]; var count = 0; answers.foreach(function(ans) {     var flag = isexists(ans.value);     flag && count++; }); console.log(count);  function isexists(value) {     return questions.some(function(ques) {         var ind = ques.answer.indexof(value);         if (ind > -1) {             ques.answer.splice(ind, 1);             return true;         }     });  }