Compare two arrays and at same value index change data

Question

I've an array like this:

    array1 = ["Jan","Feb",....,"Dec"];
    array2 = ["Jan","Sep"];

Now compare both and at array1[0] and array1[8] values changed to 0.

I want output:

    array1 = [0, "Feb", "March", ..., 0, "Oct", ..., "Dec"]

Can you clarify your question? As it is, it is hard to understand what you are asking — ControlAltDel
– ControlAltDel, Commented Sep 12, 2019 at 15:38
If we compare this two array , index 0 and 8 of array1 is equal to array2, then change the value of that indexes with new values in array1. my new array1 = [0, "Feb", "March", ..., 0, "Oct",... , "Dec"] — Vinit Bhavsar
– Vinit Bhavsar, Commented Sep 12, 2019 at 15:41

Jose Nuno · Accepted Answer · 2019-09-12 15:43:16Z

4

Not sure if I understood correctly, but assuming you want to change the array1 values to 0, if they are contained in array2, you could do this:

array1 = ["Jan","Feb","Mar","Apr","May","Jun","Jul","Aug","Sep","Oct","Nov","Dec"];
array2 = ["Jan","Sep"];

for (let i = 0; i < array1.length; i++) {
    if (array2.includes(array1[i])) {
        array1[i] = 0;
    }
}

console.log(array1);

answered Sep 12, 2019 at 15:43

Jose Nuno

6084 silver badges14 bronze badges

Sign up to request clarification or add additional context in comments.

2 Comments

Vinit Bhavsar Over a year ago

I have an another problems, array1, array2 are same and there is an array3 is same length as array2, now how to set array3 value to array1 instead of 0 .

Jose Nuno Over a year ago

@VinitBhavsar It would be similar to this answer, but instead of setting the array item to 0, you would set it like this: array1[i] = array3[i];

Collectives™ on Stack Overflow

Compare two arrays and at same value index change data

1 Answer 1

2 Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

2 Comments

Your Answer

Sign up or log in

Post as a guest

Related