1some_array = ["John", "Sally"];
2some_array.push("Mike");
3
4console.log(some_array); //output will be =>
5["John", "Sally", "Mike"]

1var colors= ["red","blue"];
2	colors.push("yellow"); 

1array.push(element)

1var fruits = ["222", "vvvv", "eee", "eeee"];
2
3fruits.push("Kiwi"); 

1let array = ["A", "B"];
2let variable = "what you want to add";
3
4//Add the variable to the end of the array
5array.push(variable);
6
7//===========================
8console.log(array);
9//output =>
10//["A", "B", "what you want to add"]

1const sports = ['Football', 'Tennis']
2sports.push('Basketball') // => ['Football', 'Tennis', 'Basketball']