题目内容

______removes a previously-attached event handler from the elements.

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_____add or remove one or more classes from each element in the set of matched elements, depending on either the class's presence or the value of the state argument.

The adjacent sibling combinator (_____ ) separates two selectors and matches the second element only if it immediately follows the first element, and both are children of the same parent

jQuery _____ Method Set Attribute

_____Bind an event handler to the "dblclick" JavaScript event, or trigger that event on an element.

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