js 工具

/**
	* @description 金额运算
	* @param { '+' | '-' | '*' | '/' } method 计算方法
	* @param { string | number} args 需要参与计算的数值或字符串
	* @return { number } 计算后的值
	*/
	const operation = (method, ...args) => {
	const arr = args.map((item) => parseInt((item *= 100)));
	let num = 0;
	switch (method) {
	case '+':
	num = arr.reduce((total, item) => total + item) / 100;
	break;
	case '-':
	num = arr.reduce((total, item) => total - item) / 100;
	break;
	case '*':
	num = arr.reduce((total, item) => (total * item) / 100, 1);
	break;
	case '/':
	num = arr.reduce((total, item) => (total * 100) / item) / 100;
	break;
	}
	return num;
	};
	/**
	* @description 防抖
	* @param { function } handler 触发的函数
	* @param { number } delay 时间
	*/
	const debounce = (handler, delay) => {
	let timer;
	return function () {
	let _this = this;
	clearTimeout(timer);
	timer = setTimeout(function () {
	handler.apply(_this, arguments);
	}, delay);
	};
	};