element-plus/website/docs/en-US/tabs.md
zazzaz f12000f9c2
feat: add website (#135)
* feat: add website

* chore: fix
2020-08-13 15:18:26 +08:00

8.2 KiB

Tabs

Divide data collections which are related yet belong to different types.

Basic usage

Basic and concise tabs.

:::demo Tabs provide a selective card functionality. By default the first tab is selected as active, and you can activate any tab by setting the value attribute.

<template>
  <el-tabs v-model="activeName" @tab-click="handleClick">
    <el-tab-pane label="User" name="first">User</el-tab-pane>
    <el-tab-pane label="Config" name="second">Config</el-tab-pane>
    <el-tab-pane label="Role" name="third">Role</el-tab-pane>
    <el-tab-pane label="Task" name="fourth">Task</el-tab-pane>
  </el-tabs>
</template>
<script>
  export default {
    data() {
      return {
        activeName: 'first'
      };
    },
    methods: {
      handleClick(tab, event) {
        console.log(tab, event);
      }
    }
  };
</script>

:::

Card Style

Tabs styled as cards.

:::demo Set type to card can get a card-styled tab.

<template>
  <el-tabs type="card" @tab-click="handleClick">
    <el-tab-pane label="User">User</el-tab-pane>
    <el-tab-pane label="Config">Config</el-tab-pane>
    <el-tab-pane label="Role">Role</el-tab-pane>
    <el-tab-pane label="Task">Task</el-tab-pane>
  </el-tabs>
</template>
<script>
  export default {
    data() {
      return {
        activeName: 'first'
      };
    },
    methods: {
      handleClick(tab, event) {
        console.log(tab, event);
      }
    }
  };
</script>

:::

Border card

Border card tabs.

:::demo Set type to border-card.

<el-tabs type="border-card">
  <el-tab-pane label="User">User</el-tab-pane>
  <el-tab-pane label="Config">Config</el-tab-pane>
  <el-tab-pane label="Role">Role</el-tab-pane>
  <el-tab-pane label="Task">Task</el-tab-pane>
</el-tabs>

:::

Tab position

You can use tab-position attribute to set the tab's position.

:::demo You can choose from four directions: tabPosition="left|right|top|bottom"

<template>
  <el-radio-group v-model="tabPosition" style="margin-bottom: 30px;">
    <el-radio-button label="top">top</el-radio-button>
    <el-radio-button label="right">right</el-radio-button>
    <el-radio-button label="bottom">bottom</el-radio-button>
    <el-radio-button label="left">left</el-radio-button>
  </el-radio-group>

  <el-tabs :tab-position="tabPosition" style="height: 200px;">
    <el-tab-pane label="User">User</el-tab-pane>
    <el-tab-pane label="Config">Config</el-tab-pane>
    <el-tab-pane label="Role">Role</el-tab-pane>
    <el-tab-pane label="Task">Task</el-tab-pane>
  </el-tabs>
</template>
<script>
  export default {
    data() {
      return {
        tabPosition: 'left'
      };
    }
  };
</script>

:::

Custom Tab

You can use named slot to customize the tab label content.

:::demo

<el-tabs type="border-card">
  <el-tab-pane>
    <span slot="label"><i class="el-icon-date"></i> Route</span>
    Route
  </el-tab-pane>
  <el-tab-pane label="Config">Config</el-tab-pane>
  <el-tab-pane label="Role">Role</el-tab-pane>
  <el-tab-pane label="Task">Task</el-tab-pane>
</el-tabs>

:::

Add & close tab

Only card type Tabs support addable & closeable.

:::demo

<el-tabs v-model="editableTabsValue" type="card" editable @edit="handleTabsEdit">
  <el-tab-pane
    v-for="(item, index) in editableTabs"
    :key="item.name"
    :label="item.title"
    :name="item.name"
  >
    {{item.content}}
  </el-tab-pane>
</el-tabs>
<script>
  export default {
    data() {
      return {
        editableTabsValue: '2',
        editableTabs: [{
          title: 'Tab 1',
          name: '1',
          content: 'Tab 1 content'
        }, {
          title: 'Tab 2',
          name: '2',
          content: 'Tab 2 content'
        }],
        tabIndex: 2
      }
    },
    methods: {
      handleTabsEdit(targetName, action) {
        if (action === 'add') {
          let newTabName = ++this.tabIndex + '';
          this.editableTabs.push({
            title: 'New Tab',
            name: newTabName,
            content: 'New Tab content'
          });
          this.editableTabsValue = newTabName;
        }
        if (action === 'remove') {
          let tabs = this.editableTabs;
          let activeName = this.editableTabsValue;
          if (activeName === targetName) {
            tabs.forEach((tab, index) => {
              if (tab.name === targetName) {
                let nextTab = tabs[index + 1] || tabs[index - 1];
                if (nextTab) {
                  activeName = nextTab.name;
                }
              }
            });
          }
          
          this.editableTabsValue = activeName;
          this.editableTabs = tabs.filter(tab => tab.name !== targetName);
        }
      }
    }
  }
</script>

:::

Customized trigger button of new tab

:::demo

<div style="margin-bottom: 20px;">
  <el-button
    size="small"
    @click="addTab(editableTabsValue)"
  >
    add tab
  </el-button>
</div>
<el-tabs v-model="editableTabsValue" type="card" closable @tab-remove="removeTab">
  <el-tab-pane
    v-for="(item, index) in editableTabs"
    :key="item.name"
    :label="item.title"
    :name="item.name"
  >
    {{item.content}}
  </el-tab-pane>
</el-tabs>
<script>
  export default {
    data() {
      return {
        editableTabsValue: '2',
        editableTabs: [{
          title: 'Tab 1',
          name: '1',
          content: 'Tab 1 content'
        }, {
          title: 'Tab 2',
          name: '2',
          content: 'Tab 2 content'
        }],
        tabIndex: 2
      }
    },
    methods: {
      addTab(targetName) {
        let newTabName = ++this.tabIndex + '';
        this.editableTabs.push({
          title: 'New Tab',
          name: newTabName,
          content: 'New Tab content'
        });
        this.editableTabsValue = newTabName;
      },
      removeTab(targetName) {
        let tabs = this.editableTabs;
        let activeName = this.editableTabsValue;
        if (activeName === targetName) {
          tabs.forEach((tab, index) => {
            if (tab.name === targetName) {
              let nextTab = tabs[index + 1] || tabs[index - 1];
              if (nextTab) {
                activeName = nextTab.name;
              }
            }
          });
        }
        
        this.editableTabsValue = activeName;
        this.editableTabs = tabs.filter(tab => tab.name !== targetName);
      }
    }
  }
</script>

:::

Tabs Attributes

Attribute Description Type Accepted Values Default
value / v-model binding value, name of the selected tab string name of first tab
type type of Tab string card/border-card
closable whether Tab is closable boolean false
addable whether Tab is addable boolean false
editable whether Tab is addable and closable boolean false
tab-position position of tabs string top/right/bottom/left top
stretch whether width of tab automatically fits its container boolean - false
before-leave hook function before switching tab. If false is returned or a Promise is returned and then is rejected, switching will be prevented Function(activeName, oldActiveName)

Tabs Events

Event Name Description Parameters
tab-click triggers when a tab is clicked clicked tab
tab-remove triggers when tab-remove button is clicked name of the removed tab
tab-add triggers when tab-add button is clicked
edit triggers when tab-add button or tab-remove is clicked (targetName, action)

Tab-pane Attributes

Attribute Description Type Accepted Values Default
label title of the tab string
disabled whether Tab is disabled boolean false
name identifier corresponding to the name of Tabs, representing the alias of the tab-pane string ordinal number of the tab-pane in the sequence, e.g. the first tab-pane is '1'
closable whether Tab is closable boolean false
lazy whether Tab is lazily rendered boolean false