## Progress 进度条

用于展示操作进度，告知用户当前状态和预期。

### 线形进度条

:::demo Progress 组件设置`percentage`属性即可，表示进度条对应的百分比，**必填**，必须在 0-100。通过 `format` 属性来指定进度条文字内容。

```html
<template>
  <el-progress :percentage="50"></el-progress>
  <el-progress :percentage="100" :format="format"></el-progress>
  <el-progress :percentage="100" status="success"></el-progress>
  <el-progress :percentage="100" status="warning"></el-progress>
  <el-progress :percentage="50" status="exception"></el-progress>
</template>

<script>
  export default {
    methods: {
      format(percentage) {
        return percentage === 100 ? '满' : `${percentage}%`
      },
    },
  }
</script>
<!--
<setup>

  import { defineComponent } from 'vue';

  export default defineComponent({
    setup() {
      const format = (percentage) => (percentage === 100 ? '满' : `${percentage}%`);
      return {
        format,
      };
    },
  });

</setup>
-->
```

:::

### 百分比内显

百分比不占用额外控件，适用于文件上传等场景。

:::demo Progress 组件可通过 `stroke-width` 属性更改进度条的高度，并可通过 `text-inside` 属性来将进度条描述置于进度条内部。

```html
<template>
  <el-progress
    :text-inside="true"
    :stroke-width="26"
    :percentage="70"
  ></el-progress>
  <el-progress
    :text-inside="true"
    :stroke-width="24"
    :percentage="100"
    status="success"
  ></el-progress>
  <el-progress
    :text-inside="true"
    :stroke-width="22"
    :percentage="80"
    status="warning"
  ></el-progress>
  <el-progress
    :text-inside="true"
    :stroke-width="20"
    :percentage="50"
    status="exception"
  ></el-progress>
</template>
```

:::

### 自定义颜色

可以通过 `color` 设置进度条的颜色，`color` 可以接受颜色字符串，函数和数组。

:::demo

```html
<template>
  <el-progress :percentage="percentage" :color="customColor"></el-progress>

  <el-progress
    :percentage="percentage"
    :color="customColorMethod"
  ></el-progress>

  <el-progress :percentage="percentage" :color="customColors"></el-progress>

  <el-progress :percentage="percentage2" :color="customColors"></el-progress>
  <div>
    <el-button-group>
      <el-button icon="el-icon-minus" @click="decrease"></el-button>
      <el-button icon="el-icon-plus" @click="increase"></el-button>
    </el-button-group>
  </div>
</template>

<script>
  export default {
    data() {
      return {
        percentage: 20,
        percentage2: 0,
        customColor: '#409eff',
        customColors: [
          { color: '#f56c6c', percentage: 20 },
          { color: '#e6a23c', percentage: 40 },
          { color: '#5cb87a', percentage: 60 },
          { color: '#1989fa', percentage: 80 },
          { color: '#6f7ad3', percentage: 100 },
        ],
      }
    },
    methods: {
      customColorMethod(percentage) {
        if (percentage < 30) {
          return '#909399'
        } else if (percentage < 70) {
          return '#e6a23c'
        } else {
          return '#67c23a'
        }
      },
      increase() {
        this.percentage += 10
        if (this.percentage > 100) {
          this.percentage = 100
        }
      },
      decrease() {
        this.percentage -= 10
        if (this.percentage < 0) {
          this.percentage = 0
        }
      },
    },
    mounted() {
      setInterval(() => {
        this.percentage2 = (this.percentage2 % 100) + 10
      }, 500)
    },
  }
</script>
<!--
<setup>

  import { defineComponent, reactive, toRefs } from 'vue';

  export default defineComponent({
    setup() {
      const state = reactive({
        percentage: 20,
        customColor: '#409eff',
        customColors: [
          { color: '#f56c6c', percentage: 20 },
          { color: '#e6a23c', percentage: 40 },
          { color: '#5cb87a', percentage: 60 },
          { color: '#1989fa', percentage: 80 },
          { color: '#6f7ad3', percentage: 100 },
        ],
      });
      const customColorMethod = (percentage) => {
        if (percentage < 30) {
          return '#909399';
        } if (percentage < 70) {
          return '#e6a23c';
        }
        return '#67c23a';
      };
      const increase = () => {
        state.percentage += 10;
        if (state.percentage > 100) {
          state.percentage = 100;
        }
      };
      const decrease = () => {
        state.percentage -= 10;
        if (state.percentage < 0) {
          state.percentage = 0;
        }
      };
      return {
        ...toRefs(state),
        customColorMethod,
        increase,
        decrease,
      };
    },
  });

</setup>
-->
```

:::

### 环形进度条

Progress 组件可通过 `type` 属性来指定使用环形进度条，在环形进度条中，还可以通过 `width` 属性来设置其大小。

:::demo

```html
<template>
  <el-progress type="circle" :percentage="0"></el-progress>
  <el-progress type="circle" :percentage="25"></el-progress>
  <el-progress type="circle" :percentage="100" status="success"></el-progress>
  <el-progress type="circle" :percentage="70" status="warning"></el-progress>
  <el-progress type="circle" :percentage="50" status="exception"></el-progress>
</template>
```

:::

### 仪表盘形进度条

:::demo 通过 `type` 属性来指定使用仪表盘形进度条。

```html
<template>
  <el-progress
    type="dashboard"
    :percentage="percentage"
    :color="colors"
  ></el-progress>
  <el-progress
    type="dashboard"
    :percentage="percentage2"
    :color="colors"
  ></el-progress>
  <div>
    <el-button-group>
      <el-button icon="el-icon-minus" @click="decrease"></el-button>
      <el-button icon="el-icon-plus" @click="increase"></el-button>
    </el-button-group>
  </div>
</template>

<script>
  export default {
    data() {
      return {
        percentage: 10,
        percentage2: 0,
        colors: [
          { color: '#f56c6c', percentage: 20 },
          { color: '#e6a23c', percentage: 40 },
          { color: '#5cb87a', percentage: 60 },
          { color: '#1989fa', percentage: 80 },
          { color: '#6f7ad3', percentage: 100 },
        ],
      }
    },
    methods: {
      increase() {
        this.percentage += 10
        if (this.percentage > 100) {
          this.percentage = 100
        }
      },
      decrease() {
        this.percentage -= 10
        if (this.percentage < 0) {
          this.percentage = 0
        }
      },
    },
    mounted() {
      setInterval(() => {
        this.percentage2 = (this.percentage2 % 100) + 10
      }, 500)
    },
  }
</script>
<!--
<setup>

  import { defineComponent, reactive, toRefs, onMounted } from 'vue';

  export default defineComponent({
    setup() {
      const state = reactive({
        percentage: 10,
        percentage2: 0,
        colors: [
          { color: '#f56c6c', percentage: 20 },
          { color: '#e6a23c', percentage: 40 },
          { color: '#5cb87a', percentage: 60 },
          { color: '#1989fa', percentage: 80 },
          { color: '#6f7ad3', percentage: 100 },
        ],
      });
      const increase = () => {
        state.percentage += 10;
        if (state.percentage > 100) {
          state.percentage = 100;
        }
      };
      const decrease = () => {
        state.percentage -= 10;
        if (state.percentage < 0) {
          state.percentage = 0;
        }
      };
      onMounted(() => {
        setInterval(() => {
          state.percentage2 = (state.percentage2 % 100) + 10
        }, 500)
      });
      return {
        ...toRefs(state),
        increase,
        decrease,
      };
    },
  });

</setup>
-->
```

:::

### 自定义内容

:::demo 通过默认插槽添加自定义内容。

```html
<template>
  <el-progress :percentage="50">
    <el-button type="text">自定义内容</el-button>
  </el-progress>
  <el-progress
    :text-inside="true"
    :stroke-width="20"
    :percentage="50"
    status="exception"
  >
    <span>自定义内容</span>
  </el-progress>
  <el-progress type="circle" :percentage="100" status="success">
    <el-button type="success" icon="el-icon-check" circle></el-button>
  </el-progress>
  <el-progress type="dashboard" :percentage="80">
    <template #default="{ percentage }">
      <span class="percentage-value">{{ percentage }}%</span>
      <span class="percentage-label">当前进度</span>
    </template>
  </el-progress>
</template>
```

:::

### 动画进度条

:::demo Progress 组件设置 `indeterminate` 属性控制进度条运动。通过设置 `duration` 属性可以控制运动速度。

```html
<template>
  <el-progress :percentage="50" :indeterminate="true"></el-progress>
  <el-progress
    :percentage="100"
    :format="format"
    :indeterminate="true"
  ></el-progress>
  <el-progress
    :percentage="100"
    status="success"
    :indeterminate="true"
    :duration="5"
  ></el-progress>
  <el-progress
    :percentage="100"
    status="warning"
    :indeterminate="true"
    :duration="1"
  ></el-progress>
  <el-progress
    :percentage="50"
    status="exception"
    :indeterminate="true"
  ></el-progress>
</template>

<script>
  export default {
    methods: {
      format(percentage) {
        return percentage === 100 ? '满' : `${percentage}%`
      },
    },
  }
</script>
<!--
<setup>

  import { defineComponent } from 'vue';

  export default defineComponent({
    setup() {
      const format = (percentage) => (percentage === 100 ? '满' : `${percentage}%`);
      return {
        format,
      };
    },
  });

</setup>
-->
```

:::

### Attributes

| 参数           | 说明                                                          | 类型                  | 可选值                    | 默认值 |
| -------------- | ------------------------------------------------------------- | --------------------- | ------------------------- | ------ |
| **percentage** | **百分比（必填）**                                            | number                | 0-100                     | 0      |
| type           | 进度条类型                                                    | string                | line/circle/dashboard     | line   |
| stroke-width   | 进度条的宽度，单位 px                                         | number                | —                         | 6      |
| text-inside    | 进度条显示文字内置在进度条内（只在 type=line 时可用）         | boolean               | —                         | false  |
| status         | 进度条当前状态                                                | string                | success/exception/warning | —      |
| indeterminate  | 是否为动画进度条                                              | boolean               | -                         | false  |
| duration       | 控制动画进度条速度                                            | number                | -                         | 3      |
| color          | 进度条背景色（会覆盖 status 状态颜色）                        | string/function/array | —                         | ''     |
| width          | 环形进度条画布宽度（只在 type 为 circle 或 dashboard 时可用） | number                |                           | 126    |
| show-text      | 是否显示进度条文字内容                                        | boolean               | —                         | true   |
| stroke-linecap | circle/dashboard 类型路径两端的形状                           | string                | butt/round/square         | round  |
| format         | 指定进度条文字内容                                            | function(percentage)  | —                         | —      |

### Slot

| name    | 说明                              |
| ------- | --------------------------------- |
| default | 自定义内容，参数为 { percentage } |