a

1. Fix the code below to ensure that the index is properly displayed in every iteration with 200ms delay:



(function() {
var index,
length = 20;
for (index = 0; index < this.length; index++) {
setTimeout(function() {
console.log(index);
}, 200);
}
})();



2. Fix the code below to print alerts only in IE7;



(function() {
alert("Hello World");
})();



4. Fix the code below to enable verification of the function (single-statement):



var object = {
alert : function(txt){
alert(txt);
},
confirm : function(txt){
confirm(txt);
}
}

object.alert("Warning: you are about to delete this item!");
object.confirm("Are you sure?");