Question

所以这里是代码段

$(document).ready(function () {
    var dmg = 60;
    var curr_hp = 1200;
    var tot_hp = 1200;
    $('#attk_spd').text('1.2 seconds');
    $('#dmg').text('60');
    $('#curr_hp').text('1200');
    $('#tot_hp').text('1200');

    var dps_timer;
    var attacking = 0;

    $("#btn").click(function () {
        if (dps_timer) {
            // We're already waiting for the next attack, so do nothing
            return;
        }

        $('#attk').text('You are currently attacking your target.');
        $('#btn').val('Retreat');

        var attack_once = function () {
            // Always attack immediately
            curr_hp -= dmg;
            $('#curr_hp').text(curr_hp);

            if (curr_hp > 0) {
                dps_timer = setTimeout(attack_once, 1200);
            } else if (attacking == 1) {
                clearTimeout(attack_once);
                attacking = 0;
                alert(attacking);
                $('#attk').text('You have retreated from battle.');
                $('#btn').val('Attack');
            } else {
                attacking = 0;
                alert(attacking);
                $('#attk').text('Your target has been destroyed.');
                $('#btn').val('Attack');
            }
        }
        if (attacking == 0) {
            attack_once();
            attacking = 1;
            alert(attacking);
        }
    });
});

我设置了警报以检查值是否正在发生变化。这基本上是一个按钮点击功能。因此，当我第一次单击按钮时，攻击开始，按钮变为撤退。但是当我单击撤退时，应该再次执行该功能检查条件，攻击变量最初设置为0，单击攻击时更改为1。因此，如果您再次点击攻击，它将运行第二个“否则”如果＆＃39;有条件的，但它没有。救命啊！

此处的操作代码：http://www.evenstar-online.com/Jquery_snippets/dpsloop.php

Answer 1

调用attacking时，

attack_once永远不能为1，因为您的if语句要求0运行{。}}。

if (attacking == 0) {
  //attacking is 0 when `attack_once()` is called
  attack_once();
  attacking = 1;
  alert(attacking);
}

var attack_once = function () {
  //.....
  // this can never be 1
  } else if (attacking == 1) {

解决方案：将attacking = 1移到attack_once();行

之上

if (attacking == 0) {
  attacking = 1;
  attack_once();
  alert(attacking);
}

无法获得jquery'else if'工作

1 个答案: