小编Sub*_*ham的帖子

res.setHeader和res.header有什么区别.哪一个应该用于启用CORS？在某些页面中使用了res.header,并且一些页面res.setHeader用于CORS.

在我的node.js应用程序中,我从mongodb服务器检索值并希望将它们转换为CSV文件.可以从数据库轻松访问父元素并显示在CSV文件中但子元素不显示且无法访问..

JSON结构:

"name" : "fhj",
"age" : "23",
"gender" : "female",
"sec" : "b",
"username" : "9886666",
"language" : "HINDI",
"method" : "method2",
"timeSlot" : {
    "id" : 2,
    "fromTime" : 12,
    "toTime" : 15
}

mycode的:

db.users.find(function(err,values){
if(err||!values.length)
   console.log("ERROR !!!!");
else
{ 
   var i=1;
   str='[';
   values.forEach(function(user){
     if(i==values.length)
         str=str+'{ "name" : "' + user.username + '","age" : "'+ user.age +'","gender":"'+user.gender+'","sec":"'+user.sec+'","username":"'+user.username+'","language":"'+user.language+'","method":"'+user.method+'","Timeslot":"'+user.timeslot+'"}';
     else{
       str = str + '{ "name" : "' + user.username + '","age" : "'+ user.age +'","gender":"'+user.gender+'","sec":"'+user.sec+'","username":"'+user.username+'","language":"'+user.language+'","method":"'+user.method+'","Timeslot":"'+user.timeslot+'"},' +'\n';
       i++;
     } …

我想在Angular 6中为新组件更改我的默认HTML模板.我使用angular-cli创建了应用程序

ng new projectname --routing

并使用创建了一个新组件

ng g c component

但每次生成默认的HTML模板

<p>
  It works
</p>

我想用自定义模板更改此模板,以便每次创建新组件时,它都遵循我的自定义模板,而不是默认模板.

我想使用 node.js 将嵌套的 json 转换为 csv 文件。我的 JSON 结构：

[
{
    "Make": "Nissan",
    "Model": "Murano",
    "Year": "2013",
    "Specifications": {
        "Mileage": "7106",
        "Trim": "SAWD"
    },
    "Items": [
        {
            "flavor": {
                "name": "Cherry",
                "id": 1
            },
            "packSize": {
                "name": "200ML",
                "id": 1
            }
        },
        {
            "flavor": {
                "name": "Vanilla",
                "id": 2
            },
            "packSize": {
                "name": "300ML",
                "id": 2
            }
        }
    ]
},
{
    "Make": "BMW",
    "Model": "X5",
    "Year": "2014",
    "Specifications": {
        "Mileage": "3287",
        "Trim": "M"
    },
    "Items": [
        {
            "flavor": {
                "name": …