<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8" />
<title>React 实例</title>
<script src="https://cdn.staticfile.org/react/16.4.0/umd/react.development.js"></script>
<script src="https://cdn.staticfile.org/react-dom/16.4.0/umd/react-dom.development.js"></script>
<script src="https://cdn.staticfile.org/babel-standalone/6.26.0/babel.min.js"></script>
</head>
<body>
<div id="example"></div>
<script type="text/babel">
function MyComponent() {
var player = { score: 1, name: "Jeff" };
var newPlayer = { ...player, score: 2 };
// player.score = 2;
return (
<div>
<span>{player.score}</span>
<span>{player.name}</span>
<br />
<span>{newPlayer.score}</span>
<span>{newPlayer.name}</span>
</div>
);
}
ReactDOM.render(<MyComponent />, document.getElementById("example"));
</script>
</body>
</html>
react拷贝数组不修改原来数组的内容
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Origin blog.csdn.net/liulang68/article/details/121543872
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