I'm currently exploring the example, but I have doubts about whether I can implement it in this manner.
import _ from "lodash";
...
let [widget, setWidgetList] = useState([]);
onRemoveItem(i) {
console.log("removing", i);
setWidgetList(_.reject(widget, { i: i }));
}
The code snippet below is extracted from the provided example:
onRemoveItem(i) {
console.log("removing", i);
this.setState({ items: _.reject(this.state.items, { i: i }) });
}
Everything here is valid JavaScript, not specific to TypeScript.
_ serves as a variable name
.reject accesses a property of the value (an object) assigned to that variable.
const _ = {
reject: function() {
console.log("called");
}
};
_.reject();All the functionality demonstrated here is written in javascript. The method _.reject comes from a library named lodash, which is being brought in at the start of the document.
As a side note, achieving the same outcome as _.reject in your example can be done by utilizing the native array method filter
onRemoveItem(index) {
console.log("removing", index);
this.setState({ items: this.state.items.filter(item => item.i !== index) });
}
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