el-table 动态el-column缓存
如果el-table-column是动态渲染的，:key如果不变，则会读缓存，注意:key一定要是唯一的
el-radio再次点击取消选中
<el-radio-group v-model="radio2">
<el-radio @click.native.prevent="clickitem(3)" :label="3"> 备选项</el-radio>
<el-radio @click.native.prevent="clickitem(6)" :label="6"> 备选项</el-radio>
<el-radio @click.native.prevent="clickitem(9)" :label="9"> 备选项</el-radio>
</el-radio-group>
clickitem (e) {
e === this.radio2 ? this.radio2 = '' : this.radio2 = e
},
el-input password
<el-input type="password" v-model="ruleForm.pass" autocomplete="new-password"></el-input>
el-dropdown-menu 绑定click事件
<el-dropdown>
<i class="el-icon-setting" style="margin-right: 15px"></i>
<el-dropdown-menu slot="dropdown">
<el-dropdown-item>个人资料</el-dropdown-item>
<el-dropdown-item @click.native="logout">退出</el-dropdown-item>
</el-dropdown-menu>
</el-dropdown>
