叡山电车 ylc395

## cloudSettings
{"lastUpload":"2020-05-29T10:33:53.525Z","extensionVersion":"v3.4.3"}

## calc.js
(function(expression) {
    let operators = {
        '+' : (a, b) => a + b,
        '-': (a, b) => a - b,
        '*': (a, b) => a * b,
        '/': (a, b) => {
            if(b === 0) throw Error('除数不能为0');
            return a / b;
        }
    };
	(function(expression) {
	let operators = {
	'+' : (a, b) => a + b,
	'-': (a, b) => a - b,
	'': (a, b) => a b,
	'/': (a, b) => {
	if(b === 0) throw Error('除数不能为0');
	return a / b;
	}
	};