2015111301

function F() {
    function f1() {
        console.log('f1')
    }
    function f2() {
        console.log('f2')
    }
    function f3() {
        console.log('f3')
    }

    // 暴露API
    return {
        f1: f1,
        f3: f3
    }
}

var f = new F()
f.f1()
f.f3()