<a href="javascript:volid(0);"><i class="icon-table"></i>表格</a> 

input[type="radio"]:checked + label:before {

                content: "\e659"; // iconfont格式，打开iconfont.css文件里面可以找到

                position: absolute;

                left: 31px;

                top: 2px;

                font-family: "iconfont" !important; // 一定要设置font-family：“iconfont”不然字体无法出来

                color: #2070F7;

                font-size: 14px;

                line-height: 42px;

              }