Question

我的页面上有一些可选的div



public class Meerkan_Bank extends Account {
        //Creating bank accounts and giving info.

        Account[] bank;
        int numberOfAccounts;

        public Meerkan_Bank() {
            bank = new Account[20];
            numberOfAccounts = 0;
        }

        //Getter
        public int getNumberOfAccounts() {
            return numberOfAccounts;
        }

        //adds account to array bank
        public void addAccount(Account a) {
             bank[numberOfAccounts] = a;
             numberOfAccounts++;
        }

        //adds account using balance
        public void addAccount(double initBalance) {
            bank[numberOfAccounts] = new Account(initBalance);
            numberOfAccounts++;
        }

        //get total balance
        public double getTotalBalance() {
            double sum = 0.0;
            for(int i=0; i < this.getNumberOfAccounts(); i++) {
                sum += bank[i].getBalance();
            }
            return sum;
        }

        //returns Account with highest balance in the array
        public String getMaxBalance() {

            Account largest = bank[0];
            for(int i = 1; i<bank.length; i++) {
                Account current = bank[i];
                **if(current.getBalance() > largest.getBalance())**
                    largest = current;
            }
            return largest.toString();
        }

        //toString
        public String toString() {
            Account maxBalance = new Account(bank[0].getBalance());
            System.out.println("The accounts in this bank are: ");
            for(int i = 0; i<this.getNumberOfAccounts(); i++) {
                if(bank[i] != null)
                    System.out.println(bank[i]);
            }
            return "\nThe total balance in the bank is: " +this.getTotalBalance()+
                    "\nThe account with the highest balance in the bank is: ";
        }

    }
    `````````````````````````

    `````````````````````````
    //TestBank
    import java.util.Scanner;
    public class Meerkan_TestBank {

        public static void main(String[] args) {
            Scanner input = new Scanner(System.in);

            Account date = new Account();
            Meerkan_Bank bank = new Meerkan_Bank();

            for(int i=0; i<5; i++) {
                System.out.println("Enter a balance");
                double balance = input.nextDouble();

                bank.addAccount(balance);
            }

            //print total and max balances
            System.out.println(bank.toString());
            System.out.println(bank.getMaxBalance());
        }

我正在寻找正确的jQuery，它将捕获“ selectable-divs”集合中已选择/单击的内容的ID值。 jQuery的可选部分工作正常，但是，当我单击div时，它在警报框中返回值“ undefined”

Answer 1

您可以使用纯jQuery和Javascript

$(function() {
    $('#selectable-divs div').click(function(){
        var x = this.id;
        alert(x);
    });
});

ES6的最后一个JavaScript版本

$(function() {
    $('#selectable-divs div').on('click', function(){
        let x = this.id
        alert(x)
    });
});

如何找出在集合中单击了哪些DIV

1 个答案: