do not use any of the respective native JS methods to implement your solutions(javascrpt)

indexOf() Without using the native Array.prototype.indexOf" method of JavaScript, compose a function titled myIndexOf' that will take in an array of elements and returns the index of the first encounter of a target element (if it is found) or -1 if that element does not exist within the input array. push() Without using the native Array.prototype.push method of JavaScript, compose a function titled myPush that will take in an array of elements as well as an elementToAdd and append that element to the end of the array