How to find multiple string items in an array and delete the string that matches the search and return the count of the array?

Question

var stringsToSearch = ["cat", "dog", "rat"];
fromThisArray = ["rabbit", "snake", "cow", "cat", "dog"];

If stringToSearch is found in fromThisArray, It should delete those strings and return the count of the array.

Similar question were asked in this forum but they are finding single string but my requirement was to search multiple string and delete those string.

There are lot of questions of similar type on SO. Just do some research work — Kiran Shinde, Dec 30 '16 at 06:22
Please format your code and add more description to the question. — thedeliciousmuffin, Dec 30 '16 at 06:22
Possible duplicate of [Javascript array search and remove string?](http://stackoverflow.com/questions/9792927/javascript-array-search-and-remove-string) — Durgpal Singh, Dec 30 '16 at 06:24
No Efforts posted duplicate. question available on SO. http://stackoverflow.com/questions/16312528/check-if-an-array-contains-any-element-of-another-array-in-javascript — Shoaib Konnur, Dec 30 '16 at 06:28

score 0 · Answer 1 · answered Dec 30 '16 at 06:25

var stringsToSearch = ["cat", "dog", "rat"];
var fromThisArray = ["rabbit", "snake", "cow", "cat", "dog"];

for(var i=0; i<stringsToSearch.length; i++){
    var idx = fromThisArray.indexOf(stringsToSearch[i]);
    if(idx > -1){
        fromThisArray.splice(idx, 1);
    }   
}

console.log(fromThisArray, fromThisArray.length);

score 0 · Accepted Answer · answered Dec 30 '16 at 06:26

0

By using filter and indexOf

var stringsToSearch = ["cat", "dog", "rat"];

var fromThisArray = ["rabbit", "snake", "cow", "cat", "dog"];

var filteredArray = fromThisArray.filter(function(item){
  return stringsToSearch.indexOf(item) < 0;
});

console.log(filteredArray);

answered Dec 30 '16 at 06:26

Jyothi Babu Araja

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Thank you every one for your time on this and all answers were close to my requirements. – santhosh Dec 30 '16 at 06:37
@skellysanthu Glad, this helped you. Happy coding – Jyothi Babu Araja Dec 30 '16 at 06:38

score 0 · Answer 3 · answered Dec 30 '16 at 06:27

function uniqueCount(arr, stringsToSearch ){

  for(var i = 0; i < stringsToSearch.length ; i++){
    while(arr.indexOf(stringsToSearch[i])> -1){
       arr.splice(i,1);//remove
    }
  }
  return arr.length;
}

var stringsToSearch = ["cat", "dog", "rat"];
var fromThisArray = ["rabbit", "snake", "cow", "cat", "dog"];

//call the function 
console.log(uniqueCount(fromThisArray , stringsToSearch ));

How to find multiple string items in an array and delete the string that matches the search and return the count of the array?

3 Answers3