This article introduces examples of ReactJS implementing single-choice and anti-choice forms. I will share them with you. I hope it will be helpful to you.
Requirements are to implement single-choice, anti-choice and multiple-choice on the list, and clear all
......
= {
//Initialize the empty array to indicate that the selected selectedStores:[],
}
......
handleClick(e){
const newSelection = ;//Get the specific item of click
let newSelectionArray;// Create a new empty array
//Display whether the click item is selected. If yes, clear the selected state
if((newSelection) > -1) {
newSelectionArray =
((s:any) => s !== newSelection)
} else {
//If not, add a new selection array
newSelectionArray =
[..., newSelection];
}
({
// Change the new selection array to selected state uniformly selectedStores: newSelectionArray
});
}
The () method returns the first index where a given element can be found in the array, and if it does not exist, it returns -1.
grammar:
(searchElement) (searchElement[, fromIndex = 0])
The () method creates a new array containing all elements of the test implemented by the provided function.
grammar:
var new_array = (callback[, thisArg])
The above is all the content of this article. I hope it will be helpful to everyone's study and I hope everyone will support me more.