Adding jQuery to Child Theme

I’ve done some hardcore php programming in the past. Played around with wordpress about a year ago and now playing around with it again.

I am using WordPress 3.5 and am writing a child theme based on the twenty twelve theme. I’ve added a JavaScript file with the following code in functions.php

function my_scripts(){

    wp_register_script("myscript", WP_CONTENT_URL . "/themes/my_child_theme/js/my-script.js");

    wp_enqueue_script("myscript");
}

add_action("wp_enqueue_scripts", "my_scripts");

The .js script file is being loaded properly (I checked the “View Source Code” from mozilla), but the script doesn’t seem to be doing anything. I’ve cracked my head over the last 3 days trying different variations of my script from a simple alert(“Hello World”) to slightly more complex document ready functions… but nothing seems to work.

Been reading different variations of how to get script working on the internet… but nothing works!!!

----------------------------------------
$(document).ready(function(){
    alert("Hello World");
});
----------------------------------------
jQuery(document).ready(function(){
    alert("Hello World");
});
----------------------------------------
(function($) {
    $(document).ready(function(){
        alert("Hello World");
    });
})(jQuery);
----------------------------------------

This is what my “my-script.js” looks like now:-

----------------------------------------
(function(a){
	function b(){
		alert("Hello");
	}
	a(document).ready(function(){
		a("#my_input").val("").keyup(b);
	})
})(jQuery);
----------------------------------------

Any help provided is much appreciated.

Thank you and regards,
Dinesh