Javascript/AJAX异步加载微调器

我试图创建一个足够基本的页面，允许用户通过单击按钮来执行php脚本。单击每个按钮将有一个加载微调器弹出窗口

我的问题是，单击一个按钮，然后单击另一个按钮，两个微调器同时关闭，即使第二个微调器可能仍在处理

有人知道如何使这些微调器真正异步吗？提前谢谢你，真让我受不了

JS:

功能测试（元素）{
var append=“#”；
var测试=追加.concat（元素）；
document.getElementById（element.style.visibility='visible'；
$.ajax（{url:“test.php”，success:function（result）{
隐藏（元素）；
}
});
};
函数隐藏（元素）{
document.getElementById（element.style.visibility='hidden'；
};

HTML:

我将实现一个计数器。每次显示加载指示器时，向计数器添加一个，每次要隐藏它时，减去一个。然后监控计数器，当其高于零时显示加载指示器，当为零时隐藏它。有意义吗？
类似以下（未经测试）的代码可能会起到作用，它巧妙地意味着您可以在ajax请求中完全避免担心微调器：

var spinningAjax = (function() { // use of the closure created by an immediate function gives us the scope to create a persistant counter variable
    var counter = 0;
    $(document).ajaxComplete(function() {
        counter--;
        if (counter === 0) {
            showSpinner(false);
        }
    });
    return function(settings) {
        counter++;
        showSpinner(true);
        $.ajax(settings);
    }
})();

var showSpinner(bool) {
    // I'll leave this up to you as it looks like your posted html / js is for example purposes rather than replicating your actual site
};

编辑：好的，在看到对另一个答案的评论后，我意识到这并不能完全解决您的问题。我会考虑一下，看看能不能做得更好

EDIT2:我认为这（不幸的是，尚未测试）代码可能是您所需要的。如果您有任何问题，请在评论中告诉我

var spinningAjax = (function() {  // closure of immediate function lets us create a persistant array of the counters for each spinner
    var counter = [];  // an array to hold the counters for each spinner
    $(document).ajaxComplete(function(event, xhr, settings) { // called whenever any ajax request is completed
        if (typeof settings.ajaxGroup !== 'undefined') { // only update the counters if an ajaxGroup has been provided
            counter[settings.ajaxGroup]--;
            if (counter[settings.ajaxGroup] === 0) {
                showSpinner(false, settings.ajaxGroup); // hide spinner when all requests connected with the spinner have been completed
            }
        }
    });
    return function(settings) { // this is the function actually assigned to the variable spinningAjax as a result of the immediate function
        counter[settings.ajaxGroup] = counter[settings.ajaxGroup] ? counter[settings.ajaxGroup]+1 : 1; // can't just use the ++ operator as this property might not be defined yet
        showSpinner(true, settings.ajaxGroup);
        $.ajax(settings);
    }
})();

var showSpinner(bool, spinnerIdentifier) {
    // I'll leave this up to you as it looks like your posted html / js is for example purposes rather than replicating your actual site
};

谢谢，我明白你的意思了，我会向你汇报的，同时欢迎任何人提出建议。只是检查一下，你知道我的意思是会有5个加料纺纱机吗？不只是一个你想要五个加载指示器还是一个？不止一个，发布的代码将创建五个，应用程序将需要多个指示器。非常感谢您的想法。如果您想要五个单独的加载指示器，我看不到您的代码中有任何明显的错误。您可能希望在PHP呈现HTML页面后检查该页面，并确保没有任何PHP错误，例如不匹配的引号。非常感谢您花了这么多时间
var spinningAjax = (function() { // use of the closure created by an immediate function gives us the scope to create a persistant counter variable
    var counter = 0;
    $(document).ajaxComplete(function() {
        counter--;
        if (counter === 0) {
            showSpinner(false);
        }
    });
    return function(settings) {
        counter++;
        showSpinner(true);
        $.ajax(settings);
    }
})();

var showSpinner(bool) {
    // I'll leave this up to you as it looks like your posted html / js is for example purposes rather than replicating your actual site
};

var spinningAjax = (function() {  // closure of immediate function lets us create a persistant array of the counters for each spinner
    var counter = [];  // an array to hold the counters for each spinner
    $(document).ajaxComplete(function(event, xhr, settings) { // called whenever any ajax request is completed
        if (typeof settings.ajaxGroup !== 'undefined') { // only update the counters if an ajaxGroup has been provided
            counter[settings.ajaxGroup]--;
            if (counter[settings.ajaxGroup] === 0) {
                showSpinner(false, settings.ajaxGroup); // hide spinner when all requests connected with the spinner have been completed
            }
        }
    });
    return function(settings) { // this is the function actually assigned to the variable spinningAjax as a result of the immediate function
        counter[settings.ajaxGroup] = counter[settings.ajaxGroup] ? counter[settings.ajaxGroup]+1 : 1; // can't just use the ++ operator as this property might not be defined yet
        showSpinner(true, settings.ajaxGroup);
        $.ajax(settings);
    }
})();

var showSpinner(bool, spinnerIdentifier) {
    // I'll leave this up to you as it looks like your posted html / js is for example purposes rather than replicating your actual site
};