-----HTML----<img class="my-img" id="myimg" src="images/resources.png" onmouseout="hidebutton(this)"onmouseover="showbutton(this)"><div id="button" class="button"><button>隱藏按鈕</button></div>----------jq--------function hidebutton(thisObj) {debugger;thisObj.next(".button").css("display", "none");}