Difference between input and button tag in jquery

You can practically analyze just by seeing the syntax.

That when you use button you can place any content between the

The content may be a span tag, an tag, an image anything you wish.

But this is not possible with input type button.

so, input type button is used when content is not required inside.

also, always remember that a button is always a submit button until you don't specify button type="button"

meaning

 
will always post your form.

but will not post the form untill you explicitly post the form using OnClick event with javascript/jquery.