<input type="button" value="改变颜色" onClick="changeColor()"> <input type="button" value="改变宽高" onClick="changeHW()"> <input type="button" value="隐藏内容" onClick="displayNo()"> <input type="button" value="显示内容" onClick="displayYes()"> <input type="button" value="取消设置" onClick="setti