我不断收到“Uncaught SyntaxError: Unexpected token o" [英] I keep getting "Uncaught SyntaxError: Unexpected token o"

问题描述

我正在尝试学习一些 html/css/javascript，所以我正在为自己编写一个教学项目.

这个想法是在 json 文件中包含一些词汇，然后将其加载到表格中.我设法加载文件并打印出其中的一个值，然后我开始编写代码将这些值加载到表中.

这样做之后，我开始遇到错误，所以我删除了我编写的所有代码，只留下一行(以前工作过的同一行)......只是错误仍然存​​在.

错误如下:

Uncaught SyntaxError: Unexpected token o(匿名函数)script.js:10jQuery.Callbacks.firejquery-1.7.js:1064jQuery.Callbacks.self.fireWithjquery-1.7.js:1182donejquery-1.7.js:7454jQuery.ajaxTransport.send.callback

我的 javascript 代码包含在一个单独的文件中，就是这样:

function loadPageIntoDiv(){document.getElementById("wokabWeeks").style.display = "block";}函数 loadWokab(){//也试过getJSON，它抛出了同样的错误jQuery.get('wokab.json', 函数(数据) {var Glacier = JSON.parse(data);});}

我的 JSON 文件现在只有以下内容:

<预><代码>[{"中文": "包","假名": "卡班",汉字":K"},{"中文": "眼镜","假名": "梅甘娜",汉字":M"}]

现在错误报告在第 11 行，即 var Glacier = JSON.parse(data); 行.

当我删除 json 文件时出现错误:GET http://.../wokab.json 404(未找到)"所以我知道它正在加载它(或至少尝试加载).

解决方案

看起来 jQuery 需要猜测数据类型.即使您没有调用 getJSON()，它也会进行 JSON 解析——然后当您尝试对对象调用 JSON.parse() 时，您会收到错误消息.

在Aditya Mittal 的回答中可以找到进一步的解释.

I'm trying to learn some html/css/javascript, so I'm writing myself a teaching project.

The idea was to have some vocabulary contained in a json file which would then be loaded into a table. I managed to load the file in and print out one of its values, after which I began writing the code to load the values into the table.

After doing that I started getting an error, so I removed all the code I had written, leaving me with only one line (the same line that had worked before) ... only the error is still there.

The error is as follows:

Uncaught SyntaxError: Unexpected token o
(anonymous function)script.js:10
jQuery.Callbacks.firejquery-1.7.js:1064
jQuery.Callbacks.self.fireWithjquery-1.7.js:1182
donejquery-1.7.js:7454
jQuery.ajaxTransport.send.callback

My javascript code is contained in a separate file and is simply this:

function loadPageIntoDiv(){
    document.getElementById("wokabWeeks").style.display = "block";
}

function loadWokab(){
    //also tried getJSON which threw the same error
    jQuery.get('wokab.json', function(data) {
        var glacier = JSON.parse(data);
    });
}

And my JSON file just has the following right now:

[
    {
        "english": "bag",
        "kana": "kaban",
        "kanji": "K"
    },

    {
        "english": "glasses",
        "kana": "megane",
        "kanji": "M"
    }
]

Now the error is reported in line 11 which is the var glacier = JSON.parse(data); line.

When I remove the json file I get the error: "GET http://.../wokab.json 404 (Not Found)" so I know it's loading it (or at least trying to).

解决方案

Looks like jQuery takes a guess about the datatype. It does the JSON parsing even though you're not calling getJSON()-- then when you try to call JSON.parse() on an object, you're getting the error.

Further explanation can be found in Aditya Mittal's answer.

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