问题描述
我已经写它运行良好，但返回一个空的responseText的XMLHtt prequest。
I have written an XMLHttpRequest which runs fine but returns an empty responseText.
中的JavaScript如下：
The javascript is as follows:
var anUrl = "http://api.xxx.com/rates/csv/rates.txt";
var myRequest = new XMLHttpRequest();
callAjax(anUrl);
function callAjax(url) {
myRequest.open("GET", url, true);
myRequest.onreadystatechange = responseAjax;
myRequest.setRequestHeader("Cache-Control", "no-cache");
myRequest.send(null);
}
function responseAjax() {
if(myRequest.readyState == 4) {
if(myRequest.status == 200) {
result = myRequest.responseText;
alert(result);
alert("we made it");
} else {
alert( " An error has occurred: " + myRequest.statusText);
}
}
}
在code运行良好。我可以步行通过，我得到的readyState == 4和状态== 200，但responseText的始终是一片空白。
The code runs fine. I can walk through and I get the readyState == 4 and a status == 200 but the responseText is always blank.
我收到错误调度的日志错误（在Safari中调试）：GetProperties中，我似乎无法找到参考。
I am getting a log error (in Safari debug) of Error dispatching: getProperties which I cannot seem to find reference to.
我已经在本地和远程服务器上运行code在Safari和Firefox。
I have run the code in Safari and Firefox both locally and on a remote server.
当放入浏览器的URL会返回一个字符串，并给了200一个状态code。
The URL when put into a browser will return the string and give a status code of 200.
我写了类似的code相同的URL在Mac控件，它运行良好，但同样的code在浏览器不会返回一个结果。
I wrote similar code to the same URL in a Mac Widget which runs fine, but the same code in a browser never returns a result.
推荐答案
是您的域 http://api.xxx.com/ 部分？如果没有，你被封锁的同源策略。
Is http://api.xxx.com/ part of your domain? If not, you are being blocked by the same origin policy.
您可能想看看下面的堆栈溢出后的几个可能的解决方法：
You may want to check out the following Stack Overflow post for a few possible workarounds:
这篇关于从XMLHtt prequest空的responseText的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！