sample020.html

﻿<!DOCTYPE html><html lang="en"><body><script>

    var objA = { property: 'value' };
    var pointer1 = objA;
    var pointer2 = pointer1;

    // update the objA.property, and all references (pointer1 & pointer2) are updated
    objA.property = null;

    // logs 'null null null' because objA, pointer1, and pointer2 all reference the same object
    console.log(objA.property, pointer1.property, pointer2.property);

</script></body></html>