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Improving code for learning purposes [closed]

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I have three tabs and I want to navigate when I click on each one of them. The code that I wrote is working just fine, but I believe that is bad coding, there is any way to improve this is just for learning purposes. Thanks!!!!
jQuery(".nuestra_actualidad li:eq(0)").click(function() {
jQuery("#tabs-actualidad").css("display","block");
jQuery("#tabs-articulos").css("display","none");
jQuery("#tabs-noticias").css("display","none");
});
jQuery(".nuestra_actualidad li:eq(1)").click(function() {
jQuery("#tabs-actualidad").css("display","none");
jQuery("#tabs-articulos").css("display","block");
jQuery("#tabs-noticias").css("display","none");
});
jQuery(".nuestra_actualidad li:eq(2)").click(function() {
jQuery("#tabs-actualidad").css("display","none");
jQuery("#tabs-articulos").css("display","none");
jQuery("#tabs-noticias").css("display","block");
});

Replacing jQuery with $ if possible (unless it clashes with another library) and then it can be reduced to a single function by utilising the index of the clicked element and calling the toggle function:
$(".nuestra_actualidad li").click(function() {
var index = $(this).index();
$("#tabs-actualidad").toggle(index === 0);
$("#tabs-articulos").toggle(index === 1);
$("#tabs-noticias").toggle(index === 2);
});
Example - http://jsfiddle.net/gSKeL/

How can I convert this coffeescript to js/jquery? [closed]

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text = child.html()
text = text.replace /(#include(\s*<.*>)?)/gi, '<span>$1</span>'
text = text.replace /(main\(.*\))/gi, '<span>$1</span>'
child.html text
http://jsfiddle.net/dcro/XKHC8/
This is an answer from my question: Wrapping strings with a span I dont know how to use coffeescript and the one who answer looks unavailable.

From js2coffee.org
var text;
text = text.replace(/(#include(\s*<.*>)?)/gi, '<span>$1</span>');
text = text.replace(/(main\(.*\))/gi, '<span>$1</span>');
child.html(text);

How to replace occurrences by key [closed]

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Closed 8 years ago.
This question appears to be off-topic because it lacks sufficient information to diagnose the problem. Describe your problem in more detail or include a minimal example in the question itself.
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This is a simple question about JavaScript,
Say I got the following string:
A)My Name B)My Name C)My Name
now I give to a function the key #1 expecting to replace the second occurrence of My Name inside that function and return:
A)My Name B) C)My Name
I haven't found the solution to this anywhere online so I'm asking.

You could use split to separate the string into the parts, then join the before and after back together:
function removeNthMatch(input, removeString, removeIndex) {
var splitString = input.split(removeString);
result = splitString.slice(0, removeIndex + 1).join(removeString)
+ splitString.slice(removeIndex + 1).join(removeString);
}
input = "A)My Name B)My Name C)My Name";
removeString = "My Name";
removeIndex = 1;
console.log(removeNthMatch(input, removeString, removeIndex));

JavaScript concatenate a variable into a constructor [closed]

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I am trying to concatenate a variable into a constructor in JavaScript
I have a variable like this:
var selectedLayer = "myLayer";
and then I am creating a Leaflet tile layer, I want to then incorporate the variable into the constructor:
test = new L.TileLayer.WMS('http://localhost/geoserver/wms',{layers : 'geonode:<selectedLayer>', format: 'image/png'});

string concatenation in javascript is done with the simple +, so your case would be:
{
layers: 'geonode:' + selectedLayer,
format: 'image/png'
}

check if url is a root url [closed]

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I'm looking for a regex to test if a url is a root url:
http://site.org TRUE
http://www.example.com TRUE
...
http://www.example.com/dir FALSE
http://www.example.com/image.jpg FALSE
http://www.example.com/dir/file.doc FALSE

Try below regex will do the work
/^https?\:\/\/[^\/]+\/?$/
I tested like this:
var URL = "http://jsfiddle.net/";
var check =/^https?\:\/\/[^\/]+\/?$/.test(URL);
alert(check);
JSFiddle

try this:
var str='url...';
if(str.indexOf("/")<str.indexOf(".")&&(str.indexOf("http://")>-1))
return true;
else
return fals;

Try out with this regular expression
(?\w+)://(?[\w#][\w.:#]+)/?[\w.?=%&=-#/$,]*