Your init function is contained by the scope of the function you've passed to jQuery.ready. This is a good thing, it means you haven't created an unnecessary global.
If you need to export the function to the global scope, you can do so by explicitly assigning to a property on window, e.g.:
window.init = init; Since window is the global object on browsers, that would allow you to call it from Chrome's console without the window. prefix. But only do that if absolutely necessary, the global scope is already crowded enough
Function declarations, like your function init() {}, are restricted to the scope they're defined in. If you want to use init elsewhere, do this:
var init;$('document').ready(function() {init = function() {};});
