class="baidu_pl"> class="article_content clearfix"> class="markdown_views prism-atom-one-dark"> 举例:排序,点击按钮,按钮变为蓝色 使用判定表达式true或false定义样式是否显示 :class="{'自定义样式类名':true或false表达式}" 上代码: class="prism language-class="tags" href="/tags/JAVASCRIPT.html" title=javascript>javascript">class="token operator"><i class="token keyword">classclass="token operator">=class="token string">"el-icon-caret-top" class="token operator">:class="token keyword">classclass="token operator">=class="token string">"{'active': activeSort.dataType=='MODIFY_TIME'&&activeSort.sortType=='asc'}" @clickclass="token operator">=class="token string">"sort('MODIFY_TIME','asc')"class="token operator">> class="token operator"><class="token operator">/iclass="token operator">> class="token operator"><style langclass="token operator">=class="token string">'less' scopedclass="token operator">> class="token punctuation">.activeclass="token punctuation">{ colorclass="token operator">: #class="token number">1890ffclass="token punctuation">; class="token punctuation">} class="token operator"><class="token operator">/styleclass="token operator">>