Question

我从字符串中获取json的自定义方法：

function GetJSON(a) {
        if (typeof a !== "string" || !a || a == null) return null;
        a = a.replace(/\r\n|\r|\n|\t/g, '').replace(/\\/g, '/');
        return new Function("return " + a)();
    }

    var notes ='{editable:true,useAjax:false,notes:[{"top":76,"left":411,"width":30,"height":30,"text":"hill","editable":true},{"top":183,"left":556,"width":30,"height":30,"text":"lake","editable":true}]}';

    return GetJSON(notes); //<-- works fine

    //I am trying to replace my custom method with
      return JSON.parse(notes);

但是当我调用JSON.parse（）

时出现语法错误

有什么不对？

编辑：我将从调试输出传递给JSON.parse（）的实际值粘贴。

Answer 1

notes = "{editable:true,useAjax:false,notes:[" + notes + "]}";

你忘了在这里引用你的钥匙。它应该是：

notes = '{"editable":true,"useAjax":false,"notes":[' + notes + ']}';

最终的JSON应该是：

var notes ='{"editable":true,"useAjax":false,"notes":[{"top":76,"left":411,...'

Answer 2

您的备注部分在两个,集之间缺少{}，使其成为无效的JSON。

应该是

[..snip..] "editable":true}, ' + '{"top":20,"left"[...snip...]
                           ^^--- missing

来自JSON.parse（）的语法错误

2 个答案: