How to check if an element exists with jquery

For technical needs of various kinds you happen to want to know whether or not there is an html element within a web page, whether it is a div, an ul/li, select/option does not matter, thanks to jquery è you can find out with a few lines of code. suppose you want to know whether or not there is a div with a class called article, code is the following:

if($(".articolo").length){
  //fa qualcosa
}

speaking in more human terms the above code says: if the length of the item element with articolo class è greater than zero and/or is set, do something.

The equivalent could have been:

if($(".articolo").length > 0){
  //fa qualcosa
}

Until next time!