多项选择题
A.mousedownB.mouseoverC.mousemoveD.mouseout
A.backB.rebackC.returnD.get
A.setAttribute()B.getAttributeC.setAttrD.getAttr
A.img.onclick =function (){}B.<img src="img/a.jpg"onclick="fn()"/>C.img.addEventListener(’click’,fn,false)D.以上都不对
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