yu-common-function/src/range/max.js

Common methods used in daily development

/**
 * 获取最大值
 * @param {*} arr
 * @param {*} key
 */
const max = (arr = [], key = '') => {
	if (!arr.length) return console.warn('The array cannot be empty') // 数组不能为空
	const isKeyObj = arr.some((item) => {
		return Object.keys(item).length
	})
	if (isKeyObj && !key) return console.warn('key Cannot be empty') // 二维数组并且key值空时

	let maxs
	if (!isKeyObj) {
		// 一维数组
		maxs = arr.reduce((one, pro) => {
			return one < pro ? pro : one
		})
	} else if (key) {
		if (
			!arr.some((item) => {
				return item[key]
			})
		)
			return console.warn(`Not found ${key} fields`)
		maxs = arr.reduce((one, pro) => {
			return one[key] < pro[key] ? pro : one
		})[key]
	}
	return maxs
}

export default max