CODEWITHSUNDEEP
javascriptarraysfor-loopstring-matching
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Reputation: 1

Matching Values from Multiple Arrays

I only have a basic understanding of coding and hope for your help. I have this js code giving me a true false log for all sausage dog occurrences in the array:

var myAnimal = "Sausage Dog";
var arrayAnimal =["Sausage Dog", "Tiger", "Sausage Dog", "Crocodile", "Lion"];
for (var i = 0; i < arrayAnimal.length; i++) {
  if(myAnimal == arrayAnimal[i]) {
     console.log("True");
     } else {
       console.log("False");
     }
}

How would I do the same task if var myAnimal was an array with multiple strings?

So it would check every animal in myAnimal against every animal in var arrayAnimal and return a true/false for all occurrences.

Is there a way of doing that?

Upvotes: 0

Views: 47

Answers (3)

Heena Khichadiya
Heena Khichadiya

Reputation: 1

var myAnimal = ["Sausage Dog", "Tiger", "Sausage", "Crocodile", "Lion"];
var arrayAnimal =["Sausage Dog", "Tiger","Crocodile", "Lion"];
for (var i = 0; i < myAnimal.length; i++) {
    for (var j = 0; j < arrayAnimal.length; j++) {
        if (myAnimal[i] == arrayAnimal[j]) {
          $('#demo').append("True</br>");
        }
    }
}

Upvotes: 0

Ori Drori
Ori Drori

Reputation: 191976

Create a dictionary from the myAniml array using Array#reduce , and then Array#map the arrayAnimal using the dictionary.

var myAnimal = ["Sausage Dog", "Lion"];
var myAnimalDict = myAnimal.reduce(function(dict, str) {
  dict[str] = true;
  
  return dict;
}, Object.create(null));

var arrayAnimal =["Sausage Dog", "Tiger", "Sausage Dog", "Crocodile", "Lion"];

var result = arrayAnimal.map(function(str) {
  return !!myAnimalDict[str];
});

console.log(result);

Upvotes: 1

daan.desmedt
daan.desmedt

Reputation: 3820

Something like this: Loop the myAnimal array inside the arrayAnimal loop - checking them for equality. 

var myAnimal =  ["Sausage Dog", "Tiger"];
var arrayAnimal = ["Sausage Dog", "Tiger", "Sausage Dog", "Crocodile", "Lion"];
for (var i = 0; i < arrayAnimal.length; i++) {
     for (var j = 0; j < myAnimal.length; j++) {
     		if(arrayAnimal[i] == myAnimal[j]) console.log('match');
     }
}

Upvotes: 2

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