es6 array contains code example
Example 1: javascript array contains
var colors = ["red", "blue", "green"];
var hasRed = colors.includes("red");
var hasYellow = colors.includes("yellow");
Example 2: javascript is int in array
[1, 2, 3].includes(2);
[1, 2, 3].includes(4);
[1, 2, 3].includes(1, 2);
Example 3: js array includes
[1, 2, 3].includes(2);
[1, 2, 3].includes(4);
[1, 2, 3].includes(3, 3);
[1, 2, 3].includes(3, -1);
[1, 2, NaN].includes(NaN);
Example 4: javascript includes method
arr.includes(searchElement[, fromIndex = 0])