Why does
Object.prototype.toString === toStringvar toStringValue = toString.call("foobaz");
I assume that toStringValue would be the value of window.toString since window is the default scope, correct? Why does toString on its own point to Object.prototype.toString instead of window.toString?
The outcome of the code you run can vary depending on the hosting environment. For example, if you execute the following:
alert(toString === window.toString);
alert(toString === Object.prototype.toString);
...you may receive different results on different browsers. In Chrome, you might see true and false, while in Firefox it could be false and false. Internet Explorer may show true and false, although there is a caveat.
Browser's handling of the window object can be complex, as it is a host object that may exhibit erratic behavior. For instance, calling toString.call("foobaz") may not work on IE, because the toString function of window is not a standard JavaScript function and lacks the call or apply methods. (This doesn't mean it's the correct behavior, of course...)
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