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

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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

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