Insert span next to textbox using jquery

I have a text bo开发者_开发知识库x. i want to insert <Span>Invalid value</span> next to that text box using Jquery. Just like when we use validation,It will come next to textbox or else.

Use after:

$("#myTextbox").after("<span>Invalid value</span>");

or insertAfter:

$('<span>Invalid value</span>').insertAfter('input:text');

$('input').append('<span>Invalid Value</span>');