How to change a text with jQuery

I have an h1 with id of toptitle that is dynamically created, and I am not able to change the HTML. It will have a different title depends on a page. Now when it is Profile, I want to change it to New word with jQuery.

<h1 id="toptitle">Profile</h1> // Changing only when it is Profile  
// to
<h1 id="toptitle">New word</h1>

Note: If the text is Profile, then change it to New word.

This should work fine (using .text():

$("#toptitle").text("New word");

Something like this should do the trick:

$(document).ready(function() {
    $('#toptitle').text(function(i, oldText) {
        return oldText === 'Profil' ? 'New word' : oldText;
    });
});

This only replaces the content when it is Profil. See text in the jQuery API.

Something like this should work

var text = $('#toptitle').text();
if (text == 'Profil'){
    $('#toptitle').text('New Word');
}

Could do it with :contains() selector as well:

$('#toptitle:contains("Profil")').text("New word");

example: http://jsfiddle.net/niklasvh/xPRzr/