js 找出数组的最大值

var maxarr = [1, 3, 45, 43, 5, 45, 100]

function findmax1(maxarr) {
	return Math.max(...maxarr)
}

function findmax2(maxarr) {
	var number = maxarr[0];
	for (var i = 1; i < maxarr.length; i++) {
		number < maxarr[i] && (number = maxarr[i])
	}
	return number
}

function findmax3(maxarr) {
	return maxarr.sort((a, b) => b - a)[0]

}