JavaScript如果答案正确，则生成新字符串

Question

我有一个程序随机生成两个数字（x和y）并要求用户将它们相乘。一旦它们相乘，它就会告诉它们是否正确或错误。我遇到问题的是，如果他们得到正确的答案，那么它应该生成一组新的数字。我不确定如何让程序再次执行该功能。它也必须清除答案字段，无论它们是对还是错。谢谢！

struct task_struct find_task_by_pid(pid_t pid);

Answer 1

你没有调用genQuestion函数，重新定义它是没有意义的。

// function that is performed when the button "check answer" is clicked. It will generate one of 4 answers depending 
//if it's right or wrong and will add 1 to the value of total. If it's incorrect it won't add anything
function buttonPressed() {
    var correctans = correct[Math.floor(Math.random() * 4)]; // randomly selecting an answer if it's correct
    var incorrectans = incorrect[Math.floor(Math.random() * 4)]; // randomly selecting an answer if it's incorrect
    var answer = document.getElementById('answer').value;

    if (answer == x * y) // correct
        {
            //call genQuestion to create new question
            genQuestion(); 
            window.alert(correctans);
            var total = parseInt(document.getElementById('total').value)++;
        }
    else {              // incorrect
        window.alert(incorrectans); 
    }
    //clear 'answer' field
    document.getElementById('answer').value = '';
}