javascript - Nodejs- TypeError : JSON. Parse,JSON.Stringify 不是函数

Question

我想将字符串转换为 JSON，反之亦然。我在下面的 router.js 中使用 JSON.Stringfy。我是否需要使用 JSON.Stringfy 函数将任何特定的 npm 添加到项目中？

代码如下:

**app.js** file(main file executed by node.exe)

app.get('/about',routes.about);-->calling it using     **http://localhost:3000/about**


**routers.js**

var User = {
'Name' :'',
'EmailId':'',
'Phone':'',
'Address':'',
'favouriteSport':''
 }

exports.about = function(req,res){
res.send("Welcome to sports maniac" + JSON.Stringfy(User));
}

看到下面的异常:

TypeError: JSON.Stringfy is not a function
   at exports.about (F:\Personal Filess\Google Drive\Software Tools\Projects\routes\router.js:17:45)
   at Layer.handle [as handle_request] (F:\Personal Filess\Google Drive\Software Tools\Projects\node_modules\express\lib\router\layer.js:95:5)
   at next (F:\Personal Filess\Google Drive\Software Tools\Projects\node_modules\express\lib\router\route.js:131:13)
   at Route.dispatch (F:\Personal Filess\Google Drive\Software Tools\Projects\node_modules\express\lib\router\route.js:112:3)
   at Layer.handle [as handle_request] (F:\Personal Filess\Google Drive\Software Tools\Projects\node_modules\express\lib\router\layer.js:95:5)
   at F:\Personal Filess\Google Drive\Software Tools\Projects\node_modules\express\lib\router\index.js:277:22
   at Function.process_params (F:\Personal Filess\Google Drive\Software Tools\Projects\node_modules\express\lib\router\index.js:330:12)
   at next (F:\Personal Filess\Google Drive\Software Tools\Projects\node_modules\express\lib\router\index.js:271:10)
   at expressInit (F:\Personal Filess\Google Drive\Software Tools\Projects\node_modules\express\lib\middleware\init.js:33:5)
   at Layer.handle [as handle_request] (F:\Personal Filess\Google Drive\Software Tools\Projects\node_modules\express\lib\router\layer.js:95:5)

Answer 1

JSON.stringify 不是 JSON.Stringfy。

专业提示 - 下次您在 xyz is not a function 行中看到错误消息时，请尝试使用 google 搜索该函数名称。

https://developer.mozilla.org/en/docs/Web/JavaScript/Reference/Global_Objects/JSON/stringify