我在Jquery / Ajax代码中遇到语法错误

Question

代码中存在错误 语法错误

    $(function(){
            $("#users").on("change", function(e){

               /* values from select statement and assigning to a variable*/
                var $filter = $("#users").val();

                $.ajax({
                   /*sending variable to the controller */
                    url: "finance/finance_transaction/",

                    data: {filter: $filter},/* variable */ 
                    dataType: "html" 

                    }).done(function(msg){

                    }).fail({});
             )}; /*syntax error points here */
        )};

它从select语句中获取值并将其发送到控制器

Answer 1

你的结束括号会产生问题

$(function(){
            $("#users").on("change", function(e){

               /* values from select statement and assigning to a variable*/
                var $filter = $("#users").val();

                $.ajax({
                   /*sending variable to the controller */
                    url: "finance/finance_transaction/",

                    data: {filter: $filter},/* variable */ 
                    dataType: "html" 

                    }).done(function(msg){

                    }).fail({});
            }); /*corrected here */
        });   /*corrected here */

Answer 2

$(function(){
    $("#users").on("change", function(e){
        // ...valid code, skipped... 
    )}; /*syntax error points here */
)}; 

大括号不匹配。与HTML标记一样，无论您先打开哪一个都必须最后关闭。最后两行应该是：

    });
});