摘要： 给一个HTML元素设置css属性，如1234varhead= document.getElementById("head");head.style.width = "200px";head.style.height = "70px";head.style.display = "block";这样写太罗嗦了，为了简单些写个工具函数，如1234567functionsetStyle(obj,css){for(varatr incss){obj.style[atr] = css[atr];}}varhead= docum 阅读全文