Javascript 看似有效的 JSON 上的 JSON.parse 错误
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JSON.parse error on a seemingly valid JSON
提问by Code Poet
I'm using JSON.parse()to parse a jsonthat's being returned from an api (Laravel 5) called using jquery's $.get(). The jsonis seemingly valid, however, JSON.parse()is returning error in both Safari and Chrome.
我正在使用JSON.parse()解析json从使用 jquery 调用的 api（Laravel 5）返回的$.get(). 在json似乎是有效的，但是，JSON.parse()在Safari和Chrome浏览器返回错误。
Chrome says:
铬 说：
Uncaught SyntaxError: Unexpected token o
Safari says:
Safari 说：
SyntaxError: JSON Parse error: Unexpected identifier "object"
The code fragment is as below:
代码片段如下：
$.get('/foo/' + product_id, function(data){
console.log(data);
var product = JSON.parse(data);
if (product) {
// do something
}
});
The JSON is:
JSON 是：
{
"id":"1b7b3eb7-8769-48fe-a421-64c105de3eff",
"parent":null,
"org_id":"845d0d53-de68-42c3-9007-c3d0e72c555e",
"category_id":"e58237f7-e040-4098-8d46-b84f8cdf7d83",
"purchase_tax":null,
"sale_tax":null,
"code":"982",
"name":"Mr. Destin Hoppe",
"is_purchased":false,
"is_sold":false,
"purchase_price":null,
"selling_price":null,
"purchase_includes_tax":false,
"sale_includes_tax":false,
"created_at":"2015-09-16 17:39:34",
"updated_at":"2015-09-16 17:39:34"
}
Interestingly, eval()works just fine.
有趣的是，eval()工作得很好。
回答by Drew Gaynor
The error is a result of databeing an object, not JSON. You don't need to parse anything; it is already a JavaScript object. jQuery does the parsing within its getmethod. To confirm this, add this line to the top of the callback.
该错误是data对象的结果，而不是 JSON。你不需要解析任何东西；它已经是一个 JavaScript 对象。jQuery 在其get方法中进行解析。要确认这一点，请将此行添加到回调的顶部。
console.log(data["id"]);
As another example of this error, the following line will also fail for the same reason.
作为此错误的另一个示例，以下行也将因相同原因而失败。
JSON.parse({});
