the building encountered a tricky problem today.
is that this.setStats ({}) does not update this.stats.
the problem is
constructor (props) {
super(props);
this.state = {
imageList: []
}
WechatService.getMaterialOrealList("image").then((result) => {
this.setState({
imageList: result
})
});
}
async handleInputChangeUpload(event) {
var target = event.target;
var file = target.files[0];
var formData = new FormData();
formData.append("file", file);
var result = await WechatService.updateMaterialImage(formData);
var lists = this.state.imageList;
lists.push(result);
console.log(lists);
//
this.setState((prevState, props) => ({
imageList: lists
}))
} 
11 render
this.setState((prevState, props) => ({
elementsUI
constructor(props) {
}
componentWillMount() {
}
handleUpload() {
}
async handleInputChangeUpload(event) {
}
Why is this?
cannot answer
author: silly Dream
Link: https://juejin.im/post/5b1a22.
Source: Nuggets
copyright belongs to the author. Commercial reprint please contact the author for authorization, non-commercial reprint please indicate the source.