Source code
Revision control
Copy as Markdown
Other Tools
function f(obj) {
return typeof obj[15];
}
function test() {
var a = [1, 2];
a.__proto__ = {15: 1337};
var b = [1, 2, 3, 4];
for (var i = 0; i < 1000; i++) {
var r = f(i % 2 ? a : b);
assertEq(r, i % 2 ? "number" : "undefined");
}
}
test();
test();
test();