函数有返回值
exports:
var T = 2;
var L = 3;
function fun() {
return T * L;
}
exports.T = T;
exports.fun = fun();
调用
var t = require('./b.js');
console.log("T是:", t.T);
console.log("面积是", t.fun);
函数无返回值
var T = 2;
var L = 3;
function fun() {
console.log("面积是:", T * L / 2);
}
exports.T = T;
exports.fun = fun;
var t = require('./b.js');
console.log("T是:", t.T);
t.fun()