为什么这个简单的 jQuery getJSON 不能在 IE8 中工作?
我有一个非常标准的 AJAX 请求:
$.getJSON('/products/findmatching/38647.json', {}, function(JsonData){
var tableHtml = '';
var x;
for (x in JsonData.matchingProds) {
var matchingProd = JsonData.matchingProds[x];
var buyMessage;
if ( x == 0 ) {
buyMessage = 'Buy Cheapest';
}
else {
buyMessage = 'Buy from this shop';
}
tableHtml = tableHtml + '<tr><td><img height="40" src="' + matchingProd.img_url + '" alt="' + matchingProd.name + '" /></td> \
<td><a href="' + matchingProd._page_url + '">' + matchingProd.name + '</a></td> \
<td><a href="' + matchingProd._merchant._url + '">' + matchingProd._merchant.title + '</td> \
<td align="right">£' + matchingProd.price + '</td> \
<td><a href="' + matchingProd.referral_url + '">' + buyMessage + '</a></td></tr>';
}
$('#matchingproducts tbody').html(tableHtml);
$('#loading').delay(1000).fadeOut();
});
它在除 IE 之外的所有浏览器中都能正常工作。我不再用 IE 做太多事情,因为我有 Mac,但我在 XP 虚拟机上有 IE8。使用其内置的调试工具并没有真正帮助(它们不是很好)。我唯一能理解的是,在某些时候我收到“预期标识符”错误。
这可能是在返回的 JSON 数据中吗?我如何从 IE 的角度检查这些数据?
I've got a very standard AJAX request:
$.getJSON('/products/findmatching/38647.json', {}, function(JsonData){
var tableHtml = '';
var x;
for (x in JsonData.matchingProds) {
var matchingProd = JsonData.matchingProds[x];
var buyMessage;
if ( x == 0 ) {
buyMessage = 'Buy Cheapest';
}
else {
buyMessage = 'Buy from this shop';
}
tableHtml = tableHtml + '<tr><td><img height="40" src="' + matchingProd.img_url + '" alt="' + matchingProd.name + '" /></td> \
<td><a href="' + matchingProd._page_url + '">' + matchingProd.name + '</a></td> \
<td><a href="' + matchingProd._merchant._url + '">' + matchingProd._merchant.title + '</td> \
<td align="right">£' + matchingProd.price + '</td> \
<td><a href="' + matchingProd.referral_url + '">' + buyMessage + '</a></td></tr>';
}
$('#matchingproducts tbody').html(tableHtml);
$('#loading').delay(1000).fadeOut();
});
It works fine in all browsers except IE. I don't do much in IE anymore as I have a Mac, but I've got IE8 on an XP virtual machine. Using its built-in Debug Tools hasn't really helped (they're not very good). The only thing I can fathom is that at some point I get and "Expected identifier" error.
Could this be in the JSON data that's returned? How can I examine that data from IE's point of view?
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嗯...看起来你的脚本在 IE 中运行良好。唯一出现问题的是您的 jQuery fadeOut 方法。我可以在这里找到相关内容:
jquery IE 淡入和淡出不透明度
基本上,IE 在更改之前未声明的 CSS 属性时会出现问题。
编辑:也许它在 IE 中运行得不好......我可能不明白页面加载的确切过程。
Hm...it appears that your script is running fine in IE. The only thing that appears to be breaking is your jQuery fadeOut method. I was able to find something about that here:
jquery IE Fadein and Fadeout Opacity
Basically, IE has issues with altering CSS properties when they haven't previously been declared.
Edit: Perhaps it is not running fine in IE...I might not have understood the exact process of the page load.
好吧,我想通了。有人建议尝试非缩小版本的 jQuery。我这样做并单步调试了 IE8s Javascript 调试器。在某个时刻,出现了以下错误:
稍微谷歌搜索一下,发现这是我为 JSON 数据设置的字符集声明。在 PHP 中,这是通过以下方式完成的:
事实证明,IE 对于字符集引用非常特殊( http://forums.asp.net/t/1345268.aspx#2732852 ),所以我将其更改为:
嘿-急,它就像一个魅力。感谢你们的帮助,你们再次为我指明了正确的方向!
Ok I figured it out. Someone suggested trying a non-minified version of jQuery. I did this and stepped through the IE8s Javascript debugger. At a certain point, the following error came up:
A little Googling found that it was the charset declaration I've set for my JSON data. In PHP, this was done with:
It turns out that IE is very particular about the charset reference ( http://forums.asp.net/t/1345268.aspx#2732852 ), so I changed it to:
And hey-presto, it works like a charm. Thanks for your help guys, you pointed me in the right direction again!
再次编辑 - 仍在调试 - 更改为使用其他函数需要使最后一个参数为
myAjaxResponderFunc
且不带引号...edit again — still debugging - that change to use the other function needs to have the last argument be
myAjaxResponderFunc
with no quotes ...您必须使用检查浏览器和 IE8+ 版本,然后使用 XDomainRequest()(如果是 msie8+)。
这将返回一个 JSON 字符串,必须使用 jQuery.parseJSON() 来创建 JSON 对象...
不要使用 getJSON!
这是我的示例:
requrl 是您要向其发出请求的 URL。
完毕!
信用至:
http: //graphicmaniacs.com/note/getting-a-cross-domain-json-with-jquery-in-internet-explorer-8-and-later/
我就是喜欢 IE!
You have to use check browser and version for IE8+, then use the XDomainRequest() if msie8+.
This will return a JSON String, must use jQuery.parseJSON() to create the JSON object…
Don't use getJSON!
Here's my example:
requrl is the URL which you are making a request to.
Done!
Credit to:
http://graphicmaniacs.com/note/getting-a-cross-domain-json-with-jquery-in-internet-explorer-8-and-later/
I just LOVE IE!