Question

Is there a way in jQuery or javascript to ignore all operations if the wrapped sets size is 0 withoug using if statement.

 menu.find('a[href="#add"]'). {code that should execute only if size()>0};

I guees I would normally have to do something like this

var m = menu.find('a[href="#add"]');

if m.size()>0 { do something }

Is there a shorter way of doing this?

Edit: full code

menu.find('a[href="#add"]').attr("href","#add-metaobject")[0].innerText = "Add Object";

Answer 1

If the selector finds 0, it doesn’t matter what follows it.

$(".nonExistentElement").css("color","red"); // nothing will be red

This is the case with $.each() too

$(".nonExistentElement").each(function(){
  World.technology.push(new PerpetualMotionMachine);
  // too bad this block will never take place
});

You could use a ternary operator, but it is really just another conditional check:

$("#someEl").length ? alert("found") : alert("not found") ;