undefined undefined 0 | |
ReferenceError: "x" is not defined | |
z: 1 | |
assignment to z succeeded | |
ReferenceError: "z" is not defined | |
1 | |
assignment to a succeeded | |
a: 1 | |
b: 1 | |
assignment to b succeeded | |
b: 1 | |
TypeError: "c" is not a writable property of [object Object] | |
c: 0 | |
2 1 0 | |
2 1 0 undefined | |
undefined undefined undefined undefined undefined | |
v: 1 | |
v: 2 | |
this.v: undefined | |
v: 2 |