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element ui中的slider的marks属性中使用到this.$createElement方法设置标记样式：
上面虽然只用到两个参数，实际上，此方法有三个参数：
①第一个参数为标签，即创建的节点元素的标签是什么
②第二个参数是属性配置，如class、style等
③第三个参数是节点元素的内容
this.$createElement方法的写法：
const h = this.$createElement; this.$info({ title: 'This is a notification
message', content: h('div', {}, [ h('p', 'some messages...some messages...'),
h('p', 'some messages...some messages...'), ]), onOk() {}, });
生成的对话框如下：
使用第二个参数进行属性配置，例如以下代码：
h('div', { class: 'test' }, [ h('p', 'some messages...some messages...'),
h('p', 'some messages...some messages...') ])
生成的是：
可以看出，dom元素上多了class属性
再试试以下代码：
h('div', { style: { color: 'green' } }, [ h('p', 'some messages...some
messages...'), h('p', 'some messages...some messages...') ])
生成的对话框的字体就会变成绿色：
