indexOf and lastIndexOf in JavaScript Arrays
In this video I go over the indexOf and lastIndexOf functions in javascript arrays.
The indexOf() method returns the first index at which a given element can be found in the array, or -1 if it is not present.
arr.indexOf(searchElement);
arr.indexOf(searchElement,startIndex);
It compares items using strict equality (===), so it will look for data type to be same as well
lastIndexOf method also works same way except it will search the array from back to the front