javascript 在 React Native 中循环 Json 和显示
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Looping Json & Display in React Native
提问by CodeGuru
How do I go about looping the result i retrieved from Json?
我如何循环我从 Json 中检索到的结果？
render: function() {
console.log(this.state.list);
contents = (
<View style={ styles.content }>
<Text>Loaded</Text>
</View>
)
return (
<View style={ styles.container }>
<View style={ styles.header }>
<Text style={ styles.headerText }>XXX</Text>
</View>
<View style={ styles.content }>
{ contents }
</View>
</View>
);
}
回答by TrungDQ
React can render an array of Elements, so you just need to construct an array and assign it to your contentsvariable. I made an example using map.
React 可以渲染一个 Elements 数组，因此您只需要构造一个数组并将其分配给您的contents变量即可。我用map.
render: function() {
console.log(this.state.list);
contents = this.state.list.results.map(function (item) {
return (
<View key={item.user.email} style={ styles.content }>
<Text>{item.user.email}</Text>
</View>
);
});
return (
<View style={ styles.container }>
<View style={ styles.header }>
<Text style={ styles.headerText }>XXX</Text>
</View>
<View style={ styles.content }>
{ contents }
</View>
</View>
);
}
And also: when you have an array of elements in React, you should provide a unique keyattribute to each element in the array. See why. In this case, I use item.user.emailas the unique identifier, but you can use another attribute, just make sure it unique (item.user.md5is promising)
还有：当你在 React 中有一个元素数组时，你应该为key数组中的每个元素提供一个唯一的属性。看看为什么。在这种情况下，我item.user.email用作唯一标识符，但您可以使用另一个属性，只需确保它是唯一的（item.user.md5很有希望）
