For help, thank you

CodePudding user response:

QuerySelector is find to the first is returned, querySelectorAll is to find all eligible, returns a nodeList, is a collection, is respectively on the set for operation to ah?

CodePudding user response:

Direct write CSS hidden by default hover shows

QuerySelectAll returns all dom collection, to change is recycled

CodePudding user response:

Style is the Element of like properties, while the NodeList without this attribute