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JavaScript JavaScript and the DOM (Retiring) Traversing the DOM Getting All Children of a Node with children

Posted by ammarkhan
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ammarkhan
Front End Web Development Techdegree Student 21,661 Points

Why LI was passed as an argument in function?

Why was LI passed in as an arguement to 

attachListItemButton(li){

}

1 Answer

Steven Parker
Steven Parker
231,261 Points
Steven Parker
Steven Parker
231,261 Points

The purpose of the function is to create and attach buttons to a list item. The "li" argument represents the particular list item that the buttons will be added to, and is needed by the function to do the job.

As you continue with the creation of the function in the video, you will see where "li" is used with the "appendChild" method to be sure each button is added in the right place.

Scott Wells
Scott Wells
8,715 Points
Scott Wells
Scott Wells
8,715 Points

So is the "li" in this case an actual HTML element, or is it simply a variable that can be targeted by ".appendChild" or does it even matter? (I'm still trying to understand what situations call for a parameter to be passed in a function. Thx)

Steven Parker
Steven Parker
231,261 Points
Steven Parker
Steven Parker
231,261 Points

It's both. Since it is an element, it is also a candidate to be a "parent" to another element "child".