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JavaScript jQuery Basics (2014) Creating a Simple Lightbox Perform: Part 1

Posted by haozhuohuang
haozhuohuang
2,590 Points

function(event)

I am having trouble about the first parameter of the click function below: $("#imageGallery a").click(function(g){ g.preventDefault(); console.log(g); }

What I do not understand is that what's the special meaning of the first parameter of the anonymous function since "g" can be any parameters and we have not specified what "g" is. But why "g" can have "preventDefault" method? Or is there is anything special about the first argument of the function when I passed it into the click method? Thanks so much!

1 Answer

Steven Parker
Steven Parker
231,275 Points
Steven Parker
Steven Parker
231,275 Points

Whatever you name it, the parameter given to the function in a click handler is the event object associated with the event being handled. One of the methods of an event object is "preventDefault".

While the name can be anything, it's more typical to name this argument "e".