How to negate code in “if” statement block in JavaScript -JQuery like 'if not then..'

Question

For example if I want to do something if parent element for used element hasn\'t got ul tag as next element, how can I achieve this?

I t

Answer 1

Try negation operator ! before $(this):

if (!$(this).parent().next().is('ul')){

Answer 2

You can use the Logical NOT ! operator:

if (!$(this).parent().next().is('ul')){

Or equivalently (see comments below):

if (! ($(this).parent().next().is('ul'))){

For more information, see the Logical Operators section of the MDN docs.