:submit selectorThe jQuery :submit selector is used to select all elements of type submit.
$( "input:submit" ) is equivalent to $( "input[type=submit]" ).
But
$( ":submit" ) is equivalent to $( "[type=submit]" ) and $('button') on some browsers.
So
always specify the TagName,use $( "input:submit" )
:submit selector Syntax$(':submit')
