Question

我的脚本是这样的：

function comtype($id, $comtype, $vendor){
        //get the input value
        $.ajax({
            //the url to send the data to
            url: "example.com/updatedb.php",
            //the data to send to
            data: {id: $id, comtype: $comtype, vendor: $vendor},
            //type. for eg: GET, POST
            type: "POST",
            //on success
            success: function(data){
                console.log("***********Success***************"); //You can remove here
                console.log(data); //You can remove here
                (function($) {              
                  jQuery.fn.extend({
                    prependClass: function(newClasses) {
                      return this.each(function() {
                        var currentClasses = $(this).prop("class");
                        $(this).removeClass(currentClasses).addClass(newClasses + " " + currentClasses);
                      });
                    }
                  });

                })(jQuery);
                $("#mycontent a.half").removeClass("half").prependClass("paid");
                //$("#mycontent a.pending").removeClass("pending").prependClass("half");

            },
            //on error
            error: function(){
                    console.log("***********Error***************"); //You can remove here
                    console.log(data); //You can remove here
            }
        });
    }

对于这一特定行：

$("#mycontent a.half").removeClass("half").prependClass("paid");

我希望能够定位使用id的确切类。

例如，我有几个类的链接，如：

class="half first4234"
class="half first8293"
class="half first9221"

我尝试了以下内容：

$("#mycontent a.half first$id").removeClass("half").prependClass("paid");

抛出以下错误：

Error: Syntax error, unrecognized expression: #mycontent a.half first$id

如何获取$ id并使其正常工作？

Answer 1

您需要将变量连接到选择器字符串

public async Task<Post> UpdatePostAsync(Post post)
{
    // Find (load from the database) the existing post
    var existingPost = await dbContext.Posts
        .SingleOrDefaultAsync(p => p.Id == post.Id);

    // Apply primitive property modifications
    dbContext.Entry(existingPost).CurrentValues.SetValues(post);

    // Apply many-to-many link modifications
    dbContext.Set<PostCategory>().UpdateLinks(
        pc => pc.PostId, post.Id,
        pc => pc.CategoryId,
        post.PostCategories.Select(pc => pc.CategoryId)
    );

    // Apply all changes to the db
    await dbContext.SaveChangesAsync();

    return existingPost;
}

在jquery函数中定位AJAX id

1 个答案: