[英]Problem with accessing value from .JSON (path issue probably)
我有一個使用api數據的react組件:
class Item extends Component {
constructor(props) {
super(props);
this.state = {
output: {}
}
}
componentDidMount() {
fetch('http://localhost:3005/products/157963')
.then(response => response.json())
.then(data => this.setState({ output: data }));
}
render() {
console.log(this.state.output);
const { general = {name:""} } = this.state.output;
const { id } = this.state.output;
const { images = {large:""} } = this.state.output;
return (
<ItemPanel>
<ItemBox>
<BoxTitle>{general.name}</BoxTitle>
<BoxId>Item ID: {id}</BoxId>
<Details onClick={show_details}>Show more...</Details>
<Inline>
<Quantity type="number" defaultValue="1"></Quantity>
<Icon>add_shopping_cart</Icon>
</Inline>
<AddItem>
<Sfont>Add to cart</Sfont>
</AddItem>
</ItemBox>
<BoxImg src={images} alt='img error'></BoxImg>
</ItemPanel>
);
}
}
export default Item;
這就是.JSON的樣子:
{
"id": "774944",
"general": {
"presentable_id": "774944",
"name": "Blekk BROTHER LC1280XLC blå",
"description": ""
},
"brand": {
"name": "Brother Norge AS"
},
"images": {
"primary": {
"large": "https://i.imgur.com/zYcibjw.jpg"
}
}
}
我需要從“ images / primary”中的“ large”訪問image src鏈接。 在這里嘗試了許多變體,但它總是返回為空或未定義的對象:/
const {images:{primary:{large}}} = this.state.output;
console.log(large)
您將在大變量中使用圖像路徑。
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