Uncaught ReferenceError: Invalid left-hand side expression in postfix operation(…)

1、错误描述

Synchronous XMLHttpRequest on the main thread is deprecated because of its detrimental effects to the end user's experience. For more help, check https://xhr.spec.whatwg.org/.
Uncaught ReferenceError: Invalid left-hand side expression in postfix operation
    
at eval (<anonymous>)    
at http://localhost:8080/mes/js/jquery-1.9.1.min.js:35:4904  
at Function.globalEval (http://localhost:8080/mes/js/jquery-1.9.1.min.js:35:4915)  
at text script (http://localhost:8080/mes/js/jquery-1.9.1.min.js:69:15505)  
at Fn (http://localhost:8080/mes/js/jquery-1.9.1.min.js:69:15159)  
at k (http://localhost:8080/mes/js/jquery-1.9.1.min.js:69:13895) 
at r (http://localhost:8080/mes/js/jquery-1.9.1.min.js:69:18226)   
at Object.send (http://localhost:8080/mes/js/jquery-1.9.1.min.js:69:18351)   
at Function.ajax (http://localhost:8080/mes/js/jquery-1.9.1.min.js:69:13490) 
at init.domManip (http://localhost:8080/mes/js/jquery-1.9.1.min.js:52:28746)
Uncaught ReferenceError: Invalid left-hand side expression in postfix operation(…)

2、错误原因

      Mybatis+springMVC配置的框架，后台接口路径为：student/findSome/stuId

      前台ajax方法里写成了：“student/findSome/”++stuId

      导致报错

3、解决办法

     前台在写接口时需要注意路径以及参数写法

     "student/findSome/"+stuId