don't include duplicate value on concat js code example
Example: don't include duplicate value on concat js
let array1 = ['a','b','c']let array2 = ['c','c','d','e'];let array3 = array1.concat(array2);array3 = [...new Set([...array1,...array2])]let array1 = ['a','b','c']let array2 = ['c','c','d','e'];let array3 = array1.concat(array2);array3 = [...new Set([...array1,...array2])]