I need help with comparing two tables that presents like this:
table A = [1, 2, 3, 4, 5, 6, 7], table B = [2, 4]
I need to check if the table A contains numbers from table B and to put it in another array:
Expected output:
table C = [false, true, false, true, false, false, false]
Tried a few things but nothing works out for me.
The table.includes
method gives me following output
let isAdded = []; allObjectivesArray.forEach((element, index) => { if (allObjectivesArray.includes(reducedArr[0][element - 1])) isAdded.push(true); else isAdded.push(false);
});
// That is the output of above isAdded = [true, true, false, false, false, false, false]
Thank you for your help.
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Answer
You can map
the array a
and check in the callback
if each item exists in the array b
with includes
function, if exists includes
will return true
if not will return false
const a = [1, 2, 3, 4, 5, 6, 7]; const b = [2, 4]; const result = a.map(i => b.includes(i)) console.log(result)