Storing a javascript array that contains objects in a MYSQL database?

So in javascript I have an array that looks about like this: [{x1:0,x2:2000,y:300},{x1:50,x2:250,y:500}] And I would like to store it in a single field in my database. I thought about either somehow making it a string and then saving it as text, but I don't really know a very efficient and "smart" way to do that. I also heard of the VARBINARY field type, but I have no idea how

存储包含MYSQL数据库中的对象的JavaScript数组?

所以在JavaScript中我有一个看起来像这样的数组: [{X1:0,X 2:2000,Y:300},{X1:50,X2:250,Y:500}] 我想将它存储在我的数据库的单个字段中。 我想或者以某种方式将其作为一个字符串,然后将其保存为文本,但我并不真正了解这样做的一种非常高效和“聪明”的方式。 我也听说过VARBINARY字段类型,但我不知道如何编写和对象/数组到其中一个以及如何读取它... 我真正最喜欢的是如果它会自动被读作一个数组。 我的M

Explain Json to me like I'm five

This question already has an answer here: What is JSON and why would I use it? 16 answers json is similar to filling your name slip on a book cover. In json information is written in a structure, which helps every one understand information easily. In json your name slip will look like: { "name": "Samimath", "class": 1, "sec": 1, "subject": "english", "rollno": 5, "school":

向我解释Json,就像我五岁

这个问题在这里已经有了答案: 什么是JSON,为什么我会使用它? 16个答案 json类似于将你的名字填在书的封面上。 在json中,信息被写入一个结构中,这有助于每个人轻松理解信息。 在json中,你的名字将如下所示: { "name": "Samimath", "class": 1, "sec": 1, "subject": "english", "rollno": 5, "school": "Rainbow Public School", "contact": 555666777 } Json是一种序列化格式,允许我们将对象转

How to acces items in deeply nested JSON object?

This question already has an answer here: What is JSON and why would I use it? 16 answers Access / process (nested) objects, arrays or JSON 18 answers 假设您发布的JSON是result ,可以通过以下方式访问属性值 Smokum : result.objects[0].standings[1].name

如何访问深层嵌套的JSON对象中的项目?

这个问题在这里已经有了答案: 什么是JSON,为什么我会使用它? 16个答案 访问/进程(嵌套)对象,数组或JSON 18个答案 假设您发布的JSON是result ,可以通过以下方式访问属性值 Smokum : result.objects[0].standings[1].name

What is the difference between client

I have this code: <script type="text/javascript"> var foo = 'bar'; <?php file_put_contents('foo.txt', ' + foo + '); ?> var baz = <?php echo 42; ?>; alert(baz); </script> Why does this not write "bar" into my text file, but alerts "42"? NB: Earlier revisions of this question were explicitly about PHP on the server and Jav

客户端有什么区别

我有这样的代码: <script type="text/javascript"> var foo = 'bar'; <?php file_put_contents('foo.txt', ' + foo + '); ?> var baz = <?php echo 42; ?>; alert(baz); </script> 为什么这不会在我的文本文件中写入“bar”,但会提示“42”? 注意:此问题的早期修订明确涉及服务器上的PHP和客户端上的JavaScript。 对于任何一种语言,当一个在客户端上运行而另一个在

encode to create strings

I have to json_encode a PHP array to a JavaScript array. Unfortunately the jQuery library I am using will not properly process that array if it contains ints instead of strings. Most of the time, this will produce proper array containing only strings: json_encode($data) Even if $data contains just numbers, I usually get this ["3","7","8"] Sometimes though, I get results like this (note the

编码来创建字符串

我必须将一个PHP数组json_encode编码为一个JavaScript数组。 不幸的是,我使用的jQuery库如果包含ints而不是字符串,将无法正确处理该数组。 大多数情况下,这将产生只包含字符串的正确数组: json_encode($data) 即使$数据只包含数字,我通常会得到这个 ["3","7","8"] 有时候,我得到这样的结果(注意零): ["9691","1792","26","1","4","15",0,"1"] 或这个 [16171,15470,10390,7585] (请注意,这显然是不同的数据

How can I modify the Object constructor

When I run the following code var ExtendedObject = function() { this.standard = 5; }; Object = ExtendedObject.bind(Object); var p = new Object(); console.dir(p.standard); , the output is 5 as expected. If I instead instantiate the variable p as an object literal like this: var ExtendedObject = function() { this.standard = 5; }; Object = ExtendedObject.bind(Object); var p = {}; cons

我如何修改Object构造函数

当我运行下面的代码 var ExtendedObject = function() { this.standard = 5; }; Object = ExtendedObject.bind(Object); var p = new Object(); console.dir(p.standard); ,输出是 五 如预期。 如果我将变量p实例化为如下的对象字面值: var ExtendedObject = function() { this.standard = 5; }; Object = ExtendedObject.bind(Object); var p = {}; console.dir(p.standard); 结果是 未定义 我试图找到一

CSRF prevention for GET requests

From what I've read, CSRF prevention seems to focus on (1) making GET requests side-effect-free and (2) using only POST requests with CSRF tokens to alter state. It seems to me, though, that this assumes that the only objective an attacker might have would be to maliciously update the victim website. What if the attacker just wants information which can be retrieved via a GET request? Coul

GET请求的CSRF预防

从我读到的内容来看,CSRF预防似乎集中于(1)使GET请求免于副作用,(2)仅使用带CSRF令牌的POST请求来改变状态。 但在我看来,这假定攻击者可能拥有的唯一目标是恶意更新受害者网站。 如果攻击者只想获取可通过GET请求获取的信息呢? 难道有人无法将来自受害者站点的敏感资源嵌入攻击网站并通过Javascript与其交互? 所以我的问题是(1)是否可能,以及(2)你如何防止它? 攻击者可能在其页面上包含以下脚本: $.get('

How to detect page zoom level in all modern browsers?

How can I detect the page zoom level in all modern browsers? While this thread tells how to do it in IE7 and IE8, I can't find a good cross-browser solution. Firefox stores the page zoom level for future access. On the first page load, would I be able to get the zoom level? Somewhere I read it works when a zoom change occurs after the page is loaded. Is there a way to trap the 'zoo

如何在所有现代浏览器中检测页面缩放级别?

如何在所有现代浏览器中检测页面缩放级别? 虽然这个线程告诉我如何在IE7和IE8中做到这一点,但我找不到一个好的跨浏览器解决方案。 Firefox存储页面缩放级别以供将来访问。 在第一页加载时,我能够获得缩放级别吗? 我读过的某个地方在加载页面后发生缩放更改时有效。 有没有办法来捕捉'zoom'事件? 我需要这个,因为我的一些计算是基于像素的,并且在缩放时可能会波动。 修改后的样本由@tfl提供 缩放时,

Is this a monad?

I'm trying to understand the concept of monads and I want to know if this code is an implementation of this concept (in JavaScript). I have function M which return new object that have set method which create wrapper method var foo = M().set('getX', function() { return this.x; }).set('setX', function(x) { this.x = x; }).set('addX', function(x) { this.x += x; }); And then I can c

这是单子吗?

我试图理解单子的概念,我想知道这个代码是否是这个概念的实现(在JavaScript中)。 我有返回创建包装方法的set方法的新对象的函数M. var foo = M().set('getX', function() { return this.x; }).set('setX', function(x) { this.x = x; }).set('addX', function(x) { this.x += x; }); 然后我可以链接foo的方法 foo.setX(10).addX(20).addX(30).getX() 将返回60 如果我有方法对象并且用这个对象调用M,那也是

Angular jsonp request coursera api giving error

The following error is given when I try to request coursera api with jsonp method in Angular. Refused to execute script from 'https://api.coursera.org/api/courses.v1?callback=angular.callbacks._0' because its MIME type ('application/json') is not executable, and strict MIME type checking is enabled. I have gone through the other answers but could not find the correct solution.

Angular jsonp请求coursera api给出错误

当我尝试在Angular中用jsonp方法请求coursera api时,出现以下错误。 拒绝从'https://api.coursera.org/api/courses.v1?callback=angular.callbacks._0'执行脚本,因为它的MIME类型('application / json')不可执行,严格的MIME类型检查已启用。 我已经通过其他答案,但找不到正确的解决方案。 这是我认为正确的代码,因为它可以成功获取其他CORS资源。 我不知道coursera api发生了什么。 var deferred