Алексей Левчук lesson3#19
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LeonEsquire
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Jan 30, 2019
| class Menu extends React.Component { | ||
| render() { | ||
| const items = this.props.items.map((item, index) => { | ||
| return <li><a href={item.href}>{item.name}</a></li> |
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<li key={index}..> - чтобы каждый элемент массива воспринимался как отдельный узел в виртуальном DOM'e, просто оптимизация 😄
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