<script>

    function fn1() {

​

        const a = new Object();

        a.val1 = 1;

        a.val2 = 2;

        a.f0 = () => a.val1 + a.val2;

        return a;

    }

​

    function fn2() {

​

        const a = new Function();

        a.val1 = 1;

        a.val2 = 2;

        a.f0 = () => a.val1 + a.val2;

        return a;

    }

​

    const f0 = function() {

        console.log(this.val1 + this.val2);

    };

​

​

    function fn3() {

​

        const a = {};

        let f1 = f0.bind(a);

        a.val1 = 1;

        a.val2 = 2;

        return f1;

    }

    class BB {

        get name() {

            return 'hi'

        }

    }

    const BBp = BB.prototype;

​

    BBp.val1 = 1;

    BBp.val2 = 2;

​

    function fn4() {

​

        const a = () => {};

        Object.setPrototypeOf(a, BBp);

​

        return a;

    }

​

    function fn5() {

​

        const a = () => {};

        a.prototype = BBp;

​

        return a;

    }

    let m = new Float64Array(256);

​

    function fn6() {

        const a = {};

        a.b = m.subarray(0, 64);

        return a;

    }

    function fn7() {

        const a = {};

        Object.defineProperty(a, 'b', {get: ()=> m.subarray(0, 64)})

        return a;

    }

</script>