use-includes-instead-of-indexOf.rst (499B)
1 use-includes-instead-of-indexOf 2 =============================== 3 4 Use ``.includes`` instead of ``.indexOf`` to check if something is in an array 5 or string. 6 7 Examples of incorrect code for this rule: 8 ----------------------------------------- 9 10 .. code-block:: js 11 12 let a = foo.indexOf(bar) >= 0; 13 let a = foo.indexOf(bar) == -1; 14 15 Examples of correct code for this rule: 16 --------------------------------------- 17 18 .. code-block:: js 19 20 let a = foo.includes(bar); 21 let a = foo.indexOf(bar) > 0;