Scope

• Global variables have global scope.
• Local variables have function scope: there is no block-level scope.

var scope = "global scope";
function checkscope(){
    var scope = "local scope";
    function nested() {
        var scope = "nested scope";
        alert("1-" + scope); //prints, what?
    }
    nested();
    scope = "local scope";
    for (var i =0; i < 10; i++){
        var scope = "nested scope";     
    }
    alert("2-" + scope);
}

checkscope()