js修改html对象css属性var para = document.getElementById("testPara").className = "testOver"; 版权声明:本文为xuqianghit原创文章,遵循CC 4.0 BY-SA版权协议,转载请附上原文出处链接和本声明。原文链接:https://blog.csdn.net/xuqianghit/article/details/6221862