How to avoid re-creating jquery wrappers?

Question

Is there a way to avoid using $("#check1") a second time in the instructions below?

 $("#check1").prop("checked",!$("#check1").prop("checked")); 

With some trick, can I do something like below?

 $("#check1").prop("checked",!this.prop("checked")); 

Answer 1

If you pass the function as a callback, you will get the current value.

 $("#check1").prop("checked", function(i, value) { return !value; }); 

.prop( propertyName, function(index, oldPropertyValue) )

• propertyNameThe name of the property to set.
• function(index, oldPropertyValue) A function returning the value to set. Receives the index position of the element in the set and the old property value as arguments. Within the function, the keyword this refers to the current element.

link

Answer 2

 var el = $("#check1"); el.prop("checked",!el.prop("checked")); 

Answer 3

 var $check = $("#check1"); $check.prop( "checked", !$check.prop("checked") ); 

Answer 4

You can use this, but as follows:

 $("#check1").prop("checked",!$(this).prop("checked"));