Question

以下React代码在Babel-Core CDN更改为版本5.8.24时有效，但在版本为6.1.19时未包含。我很困惑为什么这会很重要？不应该向前兼容吗？或者我只是错过了一些非常明显的东西？

提前致谢。

<html>
<head>
    <script src="https://unpkg.com/react@15/dist/react.min.js">
</script>
    <script src="https://unpkg.com/react-dom@15/dist/react-dom.min.js">
</script>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/babel-
core/6.1.19/browser.min.js"></script>
</head>
<body>
    <div id="app"></div>
    <script type="text/babel">
        const HelloMessage = React.createClass({
            render: function() {
                return <div>Hello {this.props.name}</div>;
            }
        });

        ReactDOM.render(<HelloMessage name="John" />, 
document.getElementById('app'));
    </script>
</body>
</html>

Answer 1

使用此脚本：

 func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {

    let item = indexPath.item
    switch item {
    case 1:
        let cell = collectionView.dequeueReusableCell(forIndexPath: indexPath) as ACollectionViewCell
        cell.ScoreName.text = xxx
        cell.ScoreName.textColor = xxx
        cell.score.text = xxx
        cell.score.backgroundColor = xxx
        cell.....

        return cell
    case 2: ...
    case 3: ...
    case 4: ...
    case 5: ...
    case 6:
        let cell = collectionView.dequeueReusableCell(forIndexPath: indexPath) as BCollectionViewCell
        cell.title.text = "xxx xxx"
        cell.score.isHidden = true
        return cell
    default:

        let cell = collectionView.dequeueReusableCell(forIndexPath: indexPath) as DCollectionViewCell
        cell.title.text = "xxx"
        cell.score.text = "xx"
        cell.score.backgroundColor = .green
        cell....
        return cell
    }
}

检查<script src="https://cdnjs.cloudflare.com/ajax/libs/babel-standalone/6.24.0/babel.js"></script> DOC。

检查工作代码：

babel-standalone

基于CDN的反应页面不适用于Babel 6.1.19

1 个答案: