jQuery what is the difference between $('') and $('p')

Question

Can someone explain to me the difference between $(\'

\') and $(\'p\') in jQuery.

for example, if i write:

$(\'body\').         


        

Answer 1

The difference:

$('

') creates a new paragraph-element

$('p') select all paragraph-elements in the DOM

Your cases:

Example 1:

$('body').append($('
').html('hello my friend'));

Will create a new paragraph-element, give it some text, and the element will then be added to the body.

Example 2:

$('body').append($('p').html('hello my friend'));

Will select all paragraph-elements already present in the DOM and change their content to 'hello my friend', it will then append them all to the body, which doesn't make much sense, since they already are in the DOM.

Since nothing gets visible when you run this code, your page likely doesn't contain any

elements, so nothing matches the $("p") selector.