小编典典

我的JavaScript返回此错误:$ .ajax不是函数

javascript

不知道出了什么问题,但是我从chrome控制台收到了此错误:

jquery-3.2.1.slim.min.js:1244 jQuery.Deferred exception: $.ajax is not a function TypeError: $.ajax is not a function
    at HTMLDocument.<anonymous> (file:///C:/Users/Adam/Desktop/UseTime/js/example.js:3:7)
    at j (file:///C:/Users/Adam/Desktop/UseTime/js/jquery-3.2.1.slim.min.js:1193:55)
    at k (file:///C:/Users/Adam/Desktop/UseTime/js/jquery-3.2.1.slim.min.js:1199:45) undefined
r.Deferred.exceptionHook @ jquery-3.2.1.slim.min.js:1244
jquery-3.2.1.slim.min.js:1247 Uncaught TypeError: $.ajax is not a function
    at HTMLDocument.<anonymous> (example.js:3)
    at j (jquery-3.2.1.slim.min.js:1193)
    at k (jquery-3.2.1.slim.min.js:1199)

通过此JavaScript:

$(function() { //when the DOM is ready
    var times; //declare global variable
    $.ajax({ //set up request
        beforeSend: function (xhr) { //before requesting data
            if (xhr.overrideMimeType) { //if supported
                xhr.overrideMimeType("application/json"); // set MIME to prevent errors
            }
        }
    });
    //funciton that collect data from the json file
    function loadTimetable() { //decalre function
        $.getJSON('data/example.json') //try to collect json data
            .done(function (data) { //if succesful
                times = data; //store in variable
            }).fail(function () { //if a problem: show message
                $('#event').html('Sorry! we couldnt load your time table at the moment');
            });
    }
    loadTimetable(); //call the function

    //CLICK ON TEH EVENT TO LOAD A TIME TABLE
    $('#content').on('click', '#event a', function (e) { //user clicks on place
        e.preventDefault(); //prevent loading page
        var loc = this.id.toUpperCase(); //get value of id attr
        var newContent = "";
        for (var i = 0; i < times[loc].length; i++) { // loop through sessions
            newContent += '<li><span class = "time">' + times[loc][i].time + '</span>';
            newContent += '<a href = "descriptions.html#';
            newContent += times[loc][i].title.replace(/ /g, '-') + '">';
            newContent += times[loc][i].title + '</a></li>';
        }
        $('#sessions').html('<ul>' + newContent + '</ul>'); // Display Time
        $('#event a.current').removeClass('current'); // update selected link
        $(this).addClass('current');
        $('#details').text('');
    });

    //CLICK ON A SESSION TO LEAD THE DESCRIPTION
    $('#content').on('click', '#sessions li a', function (e) { //click on session
        e.preventDefault(); // prevent loading
        var fragment = this.href; //title is in href
        fragment = fragment.replace('#', ' #'); //Add Space before #
        $('#details').load(fragment); //to load info
        $('#sessions a.current').removeClass('current'); //update selected
    });

    //CLICK ON PRIMARY NAVIGATION
    $('nav a').on('click', function (e) { //click on nav
        e.preventDefault(); //prevent loading
        var url = this.href; //get UR: to load
        $('nav a.current').removeClass('current');
        $(this).addClass('current');
        $('#container').remove(); //remove old
        $('#content').load(url + ' #container').hide().fadeIn('slow'); // add new
    });
});

我不确定启动.ajax的方式是否有问题,或者jquery的实现是否正确。我认为是这样。有什么想法吗?

编辑:这是上面脚本附带的html

<!DOCTYPE html>

<body>
    <header>
        <h1>UseTime</h1>
        <nav>
            <a href="jq-load.html">HOME</a>
            <a href="jq-load.html2">PROFILE</a>
            <a href="jq-load.html4">MANAGE TASKS</a>
            <a href="usetime.html">TIME TABLE</a>
        </nav>
    </header>
    <section id="content">
        <div id="container">
            <div class="third">
                <div id="event">
                    <a id="class1" href="class1.html"><img src="" alt="class1" /> Class 1 </a>
                    <a id="class2" href="class2.html"><img src="" alt="class2" /> Class 2 </a>
                    <a id="class3" href="class3.html"><img src="" alt="class3" /> Class 3 </a>
                </div>
            </div>
            <div class="third">
                <div id="sessions"> Select a Class from the left </div>
            </div>
            <div class="third">
                <div id="details"> Details </div>
            </div>
        </div>
        <!-- container -->
    </section>
    <!-- content -->

    <script src="js/jquery-3.2.1.slim.min.js"></script>
    <script src="js/example.js"></script>
</body>

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2020-05-01

共1个答案

小编典典

您正在使用jQuery的超薄版本。它不支持ajax调用。采用

<script src="https://code.jquery.com/jquery-3.2.1.min.js"></script>

代替它。

Slim build

有时您不需要ajax,或者您更喜欢使用专注于ajax请求的众多独立库之一。通常,对所有Web动画使用CSS和类操作的组合会更简单。与包括ajax和effects模块的jQuery常规版本一起,我们发布了一个“slim”版本,其中不包括这些模块。总而言之,它不包括ajax,效果和当前不建议使用的代码。如今,jQuery的大小很少会涉及到负载性能,但是苗条的构建比常规版本小6kgzip压缩字节,即23.6k vs 30k。这些文件也可以在npm软件包和CDN中找到:

https://code.jquery.com/jquery-3.1.1.slim.js
https://code.jquery.com/jquery-3.1.1.slim.min.js
2020-05-01