Functions and scope

HTML

<div id="text"></div>

<div id="error"></div>

JavaScript

window.onerror = function(errorMessage) {
    $("#error").text(errorMessage);
}

function addText(text) {
    $("#text").text($("#text").text() + text);
};

$(document).ready(function() {
    function1 = function() {
        return "foo"
    };

    function function2() {
        return "bar"
    };

    function3 = function() {
        return "baz"
    };

    addText(function1());
    addText(function2());
    addText(function3());
});

addText(function1());
//addText(function2());
//addText(function3());