I tried the following:
$.load("Views/chatBox.html").appendTo('body')
Console Output:
TypeError: $.load is not a function
EDIT: The answer should only be one line of code; that's enough, I think.
Nope, all those answers are incorrect because they rely on having a separate container!
Do this:
$.ajax({
url: "your.html",
success: function (data) { $('body').append(data); },
dataType: 'html'
});