“Access-Control-Allow-Origin”不允许使用“jquery和random.org”。

问题描述

我在使用jQuery从random.org请求随机数时遇到问题。当我使用静态页面和以下javascript时，我没有任何问题得到随机数。但是，我正在Heroku上托管一个Sinatra应用程序（同样，当使用Thin在本地生产我的应用程序时）我得到（Access-Control-Allow-Origin不允许（网站）。

I am having a problem requesting a random number from random.org using jQuery. When I'm using a static page and the following javascript, I don't have any issues getting random numbers. However, I am hosting a Sinatra app on Heroku (also, when running my app locally in production using Thin) I get "(website) is not allowed by Access-Control-Allow-Origin."

function raffler(){

var rowCount = $('#winnerTable tr').length;

$('#winnerButton').click(function() {
    $.get("http://www.random.org/integers/?", {num: "1", min: "1", max: rowCount, col: "1", base: "10", format: "plain", rnd: "new"}, function(randNum) {
        var myNumber = randNum;
        $("#entry-" + randNum).addClass('winner');
    });
});

};

想法？

推荐答案

老实说，我不知道你怎么能以任何方式做到这一点。因为你不应该这样做。 Access-Control-Allow-Origin是一种XSS保护，可以阻止跨域请求，是大多数客户端脚本引擎（例如Flash）的一部分。使用以下代码生成随机数：

Honestly I don't get how you could do that in any way. Because you shouldn't be able to do it. Access-Control-Allow-Origin is an XSS protection which blocks cross domain requests and is part of most client side scripting engines (e.g. Flash). Use the following to random number generation:

Math.random()

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