Ant Design 组件库之步骤条实现

引言

1 antd 之 Steps API

2 antd 之 Steps 示例

引言

antd 组件库是基于 Ant Design 设计体系的 React UI 组件库，antd 为 Web 应用提供了丰富的基础 UI 组件，可以用于研发企业级中后台产品。这篇咱们介绍 antd 组件库之 步骤条。

1 antd 之 Steps API

步骤条 Steps 的用处是在当任务复杂或者存在先后关系时，将其分解成一系列的步骤，从而达到简化任务的目的。其 DOM 节点为 :

<Steps>
  <Step>...</Step>
  <Step>...</Step>
  <Step>...</Step>
</Steps>

antd 中的步骤条样式丰富，可以通过设置 Steps 和 Step 的属性来产生不同的步骤条样式，详细的这里我进行一个整理：

下面做一些实践。

2 antd 之 Steps 示例

先来看最简单的静态的步骤条，看代码：

import { Steps } from 'antd';
import React from 'react';
const { Step } = Steps;
const App = () => (
  <Steps current={1}>
    <Step title="Finished" description="This is a description." />
    <Step title="In Progress" subTitle="Left 00:00:08" description="This is a description." />
    <Step title="Waiting" description="This is a description." />
  </Steps>
);
export default App;

可以看到现在 current 默认选择了 1，来看效果：

如果 current 我们选择了 2，那会是什么样子的呢：

再来看一个 带图标的步骤条，这里用了 antd 的 icon，上代码：

import { LoadingOutlined, SmileOutlined, SolutionOutlined, UserOutlined } from '@ant-design/icons';
import { Steps } from 'antd';
import React from 'react';
const { Step } = Steps;
const App = () => (
  <Steps>
    <Step status="finish" title="Login" icon={<UserOutlined />} />
    <Step status="finish" title="Verification" icon={<SolutionOutlined />} />
    <Step status="process" title="Pay" icon={<LoadingOutlined />} />
    <Step status="wait" title="Done" icon={<SmileOutlined />} />
  </Steps>
);
export default App;

来看效果：

来有意思一些的，看看动态的吧：配合按钮进行步进或后退，来表示一个流程的处理进度，上代码：

import { Button, message, Steps } from 'antd';
import React, { useState } from 'react';
const { Step } = Steps;
const steps = [
  {
    title: 'First',
    content: 'First-content',
  },
  {
    title: 'Second',
    content: 'Second-content',
  },
  {
    title: 'Last',
    content: 'Last-content',
  },
];
const App = () => {
  const [current, setCurrent] = useState(0);
  const next = () => {
    setCurrent(current + 1);
  };
  const prev = () => {
    setCurrent(current - 1);
  };
  return (
    <>
      <Steps current={current}>
        {steps.map((item) => (
          <Step key={item.title} title={item.title} />
        ))}
      </Steps>
      <div className="steps-content">{steps[current].content}</div>
      <div className="steps-action">
        {current < steps.length - 1 && (
          <Button type="primary" onClick={() => next()}>
            Next
          </Button>
        )}
        {current === steps.length - 1 && (
          <Button type="primary" onClick={() => message.success('Processing complete!')}>
            Done
          </Button>
        )}
        {current > 0 && (
          <Button
            style={{
              margin: '0 8px',
            }}
            onClick={() => prev()}
          >
            Previous
          </Button>
        )}
      </div>
    </>
  );
};
export default App;

还有 CSS 代码，同级目录下写个 index.less：

.steps-content {
    min-height: 200px;
    margin-top: 16px;
    padding-top: 80px;
    text-align: center;
    background-color: #fafafa;
    border: 1px dashed #e9e9e9;
    border-radius: 2px;
  }
  .steps-action {
    margin-top: 24px;
  }

来看效果：

步骤条还可以通过 Steps 的 status 属性来指定当前步骤的状态，来看示例：

import { Steps } from 'antd';
import React from 'react';
const { Step } = Steps;
const App = () => (
  <Steps current={1} status="error">
    <Step title="Finished" description="This is a description" />
    <Step title="In Process" description="This is a description" />
    <Step title="Waiting" description="This is a description" />
  </Steps>
);
export default App;

来看效果，这里是第 1 步出现 err 了：

咱们也可以给步骤条的每个步骤添加自定义的展示，上代码：

import { Popover, Steps } from 'antd';
import React from 'react';
const { Step } = Steps;
const customDot = (dot, { status, index }) => (
  <Popover
    content={
      <span>
        step {index} status: {status}
      </span>
    }
  >
    {dot}
  </Popover>
);
const App = () => (
  <Steps current={1} progressDot={customDot}>
    <Step title="Finished" description="You can hover on the dot." />
    <Step title="In Progress" description="You can hover on the dot." />
    <Step title="Waiting" description="You can hover on the dot." />
    <Step title="Waiting" description="You can hover on the dot." />
  </Steps>
);
export default App;

来看效果：

最后来看一个 Steps 中的 Step 可点击的步骤条，上代码：

import { Divider, Steps } from 'antd';
import React, { useState } from 'react';
const { Step } = Steps;
const App = () => {
  const [current, setCurrent] = useState(0);
  const onChange = (value) => {
    console.log('onChange:', current);
    setCurrent(value);
  };
  return (
    <>
      <Steps current={current} onChange={onChange}>
        <Step title="Step 1" description="This is a description." />
        <Step title="Step 2" description="This is a description." />
        <Step title="Step 3" description="This is a description." />
      </Steps>
      <Divider />
      <Steps current={current} onChange={onChange} direction="vertical">
        <Step title="Step 1" description="This is a description." />
        <Step title="Step 2" description="This is a description." />
        <Step title="Step 3" description="This is a description." />
      </Steps>
    </>
  );
};
export default App;

从上面的代码可以看到，当你点击 change Steps 的时候，会触发 onChange 回调函数，咱们这里的 onChange 只做了两件事情：

(1) 控制台打印 current，current 大家应该熟悉，就是第几个 Step；

(2) 设置 setCurrent。这个地方不限于此，尽可以发挥想象。

来看效果：