Using a Variable & Loop to Create “onclick” Functions [duplicate]

Answer 1

you should use getElementById :

document.getElementById("link" + i);

also i suggest you use jQuery framework. it's so easy than bare javascript.

Answer 2

Try this...

var temp = document.getElementById("link" + i);

temp.onclick = function...

Answer 3

Two things. First you need to wrap i in a closure to store the value that you want. Second [temp] will not select a DOM element, you will need to do that differently.

for (var i = 0; i < 3; i++) {
    var temp = "link" + i;

    document.getElementById(temp).onclick = (function(t) {
        return function (e) { 
            alert("You just clicked link: " + t);
        };
    })(i);
}