"$"未定义 [英] '$' is undefined

问题描述

无论是否将jQuery $ .ajax调用都放在$(document).ready(function() {中，我都会收到此错误.这是在ASP.NET MVC .cshtml文件上.

I get this error whether I put the jQuery $.ajax call in a $(document).ready(function() { or not. This is on a ASP.NET MVC .cshtml file.

 <script type="text/javascript">
    $(document).ready(function() {

        $.ajax({
            url: '/api/courses',
            success: function(data) {
                var list = $('#courses');
                for (var i = 0; i < data.length; i++) {
                    var course = data[i];
                    list.append('<li id="' + course.id + '">' + course.name + '</li>');
                }
            }
        });
    });

推荐答案

确保首先引用JQuery.类似于(使用MS CDN)的内容:

Make sure you reference JQuery first. Something along the lines of (using MS CDN):

<script src="http://ajax.aspnetcdn.com/ajax/jQuery/jquery-1.8.2.min.js" type="text/javascript"></script> 
<script type="text/javascript">
    $(document).ready(function() {
        $.ajax({
            url: '/api/courses',
            success: function(data) {
                var list = $('#courses');
                for (var i = 0; i < data.length; i++) {
                    var course = data[i];
                    list.append('<li id="' + course.id + '">' + course.name + '</li>');
                }
            }
        });
    });
</script>

这篇关于"$"未定义的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！