前台报了这么个错，json数据都有，网上找了好久都找不到，众神谁来帮帮我！！

Uncaught SyntaxError: Unexpected token d in JSON at position 0
at JSON.parse ()
at Object.formatItemParamData as formatter, :4:19)
at Object.renderRow (http://localhost:8080/js/jquery-easyui-1.4.1/jquery.easyui.min.js:9986:13)
at Object.render (http://localhost:8080/js/jquery-easyui-1.4.1/jquery.easyui.min.js:9919:26)
at _5f6 (http://localhost:8080/js/jquery-easyui-1.4.1/jquery.easyui.min.js:8837:18)
at http://localhost:8080/js/jquery-easyui-1.4.1/jquery.easyui.min.js:9422:1
at Object.success (http://localhost:8080/js/jquery-easyui-1.4.1/jquery.easyui.min.js:10128:1)
at j (http://localhost:8080/js/jquery-easyui-1.4.1/jquery.min.js:2:27244)
at Object.fireWith as resolveWith
at x (http://localhost:8080/js/jquery-easyui-1.4.1/jquery.min.js:4:21843)

贴代码，只是报错看的问题不大

你确定不是json数据格式的问题？

json字符串有问题，无法转为json对象，自己f12打开浏览器开发工具看ajax返回了什么内容，贴那个内容出来，肯定是格式错了