search and find the index of a string in multidimensional array in javascript

Question

I have a multi-dimensional array, and i want to find a string in that array that the user inputs. And i want to store it's index(both of them, like of the string is at arr[a][b] , i need both the values of a and b .

For example, i have an array as following and want to find the word "scar", how can i get it?

var arr=[["hey","oh"],["scar","tissue"],["other","side"]];

I have tried the following block :

var a;
var b;

for (var z = 0; z < arr.length; z++) {
  for (var i = 0; i < 2; i++) {
    if (arr[z][i] === "scar") {
      b = z;  
      a = i;
    }
  }
}

I tried searching and researching the question but couldn't find one.

Thanks in advance.

Answer 1

You can search your string in many way

using a nested for-for

for (a = 0; a < arr.length; a++){
  for (b=0; b < arr[a].length; b++){
    if (arr[a][b] == mySearch){
      return true;
    }
  }
}

using a nested forEach

var found = false;
arr.forEach(function(a) {
  a.forEach(function(b) {
    if (b == wordToFind) {
      found = true;
    }
  });
});

return found;

Answer 2

you can loop each subarray and then with the function indexOf() check if the required index is found:

 var arr = [["hey","oh"], ["scar","tissue"], ["other","side"]]; function get_index_of_string(my_array, mystring) { var a = 0; var results = []; var b, subarray; for (var arrayIndex in my_array) { subarray = my_array[arrayIndex]; var search = subarray.indexOf(mystring) if (search != -1){ a++; b = search; } } results[0] = a; results[1] = b; return results; } var results = get_index_of_string(arr,"scar"); if (results[0] != -1 && results[1] != -1) { alert("String is found in the " + results[0] + " subarray in the " + results[1] + " index"); } else{ alert("String is not found"); }