Xartok · February 25, 2014 15:11
diff --git a/gistfile1.txt b/gistfile1.txt
 var f = (function() {
    for(var i = 1; i <= 3; i++){
        var j = i + 1; // with block scope, j would be inaccesible outside the for statement
    }
    return j; // however, j is accessible here, because Javascript doesn't have block scope
 })();

 console.log("f: ", f); // as a result, f value is 4, not undefined
	var f = (function() {
	for(var i = 1; i <= 3; i++){
	var j = i + 1; // with block scope, j would be inaccesible outside the for statement
	}
	return j; // however, j is accessible here, because Javascript doesn't have block scope
	})();

	console.log("f: ", f); // as a result, f value is 4, not undefined
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