我是 React JS 的新手问题是我需要在这段代码中显示数据库中的所有字段。我已经能够在浏览器控制台中获取所有数据作为对象，并且能够在浏览器中查看数组中的最后一条数据，但无法查看它们。请原谅我在代码中的错误格式，因为我是新手。在此先感谢......
输出和代码
浏览器 View : Land of Toys Inc.是名字131是ID
JSON 数据:
{"posts":[
{"id":"103","name":"Atelier graphique"},
{"id":"112","name":"Signal Gift Stores"},
{"id":"114","name":"Australian Collectors, Co."},
{"id":"119","name":"La Rochelle Gifts"},
{"id":"121","name":"Baane Mini Imports"},
{"id":"124","name":"Mini Gifts Distributors Ltd."},
{"id":"125","name":"Havel & Zbyszek Co"},
{"id":"128","name":"Blauer See Auto, Co."},
{"id":"129","name":"Mini Wheels Co."},
{"id":"131","name":"Land of Toys Inc."}
]}
这个数据是通过写成插件的PHP代码获取的，它的形式是在JS代码中给出的url形式
http://localhost/Akshay/REACT/testDataAPI.php?user=2&num=10&format=json
我的代码:
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>React Tutorial</title>
<!-- Not present in the tutorial. Just for basic styling. -->
<link rel="stylesheet" href="css/base.css" />
<script src="https://npmcdn.com/react@15.3.0/dist/react.js"></script>
<script src="https://npmcdn.com/react-dom@15.3.0/dist/react-dom.js"></script>
<script src="https://npmcdn.com/babel-core@5.8.38/browser.min.js"></script>
<script src="https://npmcdn.com/jquery@3.1.0/dist/jquery.min.js"></script>
<script src="https://npmcdn.com/remarkable@1.6.2/dist/remarkable.min.js"></script>
</head>
<body>
<div id="content"></div>
<script type="text/babel">
var UserGist = React.createClass({
getInitialState: function() {
return {
username:[],
companyID:[]
};
},
componentDidMount: function()
{
var rows = [];
this.serverRequest = $.get(this.props.source, function (result) {
for (var i=0; i < 10; i++)
{
var lastGist = result.posts[i];
//console.log(result.posts[i]);
this.setState({
username: lastGist.id,
companyID: lastGist.name
});
}
}.bind(this));
},
componentWillUnmount: function() {
this.serverRequest.abort();
},
render: function() {
return (
<li>{this.state.companyID} is the name {this.state.username} is the ID</li>
);
}
});
ReactDOM.render(
<UserGist source="http://localhost/Akshay/REACT/testDataAPI.php?user=2&num=10&format=json" />,
document.getElementById('content')
);
</script>
</body>
</html>
最佳答案
使用 map 呈现您的数据。并将 json 作为 javascript 对象存储在状态本身而不是两个单独的数组中。
<!-- Not present in the tutorial. Just for basic styling. -->
<link rel="stylesheet" href="css/base.css" />
<script src="https://npmcdn.com/react@15.3.0/dist/react.js"></script>
<script src="https://npmcdn.com/react-dom@15.3.0/dist/react-dom.js"></script>
<script src="https://npmcdn.com/babel-core@5.8.38/browser.min.js"></script>
<script src="https://npmcdn.com/jquery@3.1.0/dist/jquery.min.js"></script>
<script src="https://npmcdn.com/remarkable@1.6.2/dist/remarkable.min.js"></script>
<div id="content"></div>
<script type="text/babel">
var UserGist = React.createClass({
getInitialState: function() {
return {
data: [{"id":"103","name":"Atelier graphique"},
{"id":"112","name":"Signal Gift Stores"},
{"id":"114","name":"Australian Collectors, Co."},
{"id":"119","name":"La Rochelle Gifts"},
{"id":"121","name":"Baane Mini Imports"},
{"id":"124","name":"Mini Gifts Distributors Ltd."},
{"id":"125","name":"Havel & Zbyszek Co"},
{"id":"128","name":"Blauer See Auto, Co."},
{"id":"129","name":"Mini Wheels Co."},
{"id":"131","name":"Land of Toys Inc."}]
};
},
componentDidMount: function()
{
},
componentWillUnmount: function() {
this.serverRequest.abort();
},
render: function() {
return (
<div>
{this.state.data.map(function(item, index){
return <li>{item.name} is the company name, {item.id} is the ID</li>
})}</div>
);
}
});
ReactDOM.render(
<UserGist source="http://localhost/Akshay/REACT/testDataAPI.php?user=2&num=10&format=json" />,
document.getElementById('content')
);
</script>
</html>
对于 fiddle 示例，我删除了 componentDidMount 中的 $.get() 代码。
P.S. Create the state array data as an array of object as shown in the fiddle example
关于javascript - react JS : Map over an array of objects to render in JSX，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/39150326/