a11yTips — Use redundant keyboard and mouse event handlers

Use redundant keyboard and mouse event handlers

Make sure specific mouse event handlers are duplicated to account for the keyboard

It is not uncommon for images and other active objects to change or be modified in response to a mouse event; images appears to be active or inactive, to change color, to be turned on or off. Links change color, or have their presentation altered. Tooltips, sub menus and tab panels fly out as the users’ mouse hovers over them, etc. Authors often fall into the trap of planning great interactions for the mouse, while failing to replicate the same behaviour for [...]

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