JavaScript 错误:标签无效?这是什么意思?
不用担心!它看起来比实际更多的文字;-)所以请继续阅读!
主要问题是:
- 错误:无效标签是什么意思?
- 我的脚本错误在哪里?
现在极客的东西开始了;-):
我有一个脚本,它从服务器加载语言数组的项目(通过 js 中的 lang_keys 定义的项目 - 见上文)(服务器提供该语言数组的 JSON 版本)数组),用于当前语言。
使用 JS translate("
函数,您可以获取当前语言所需的文本。 更新:jquery 1.5 未缩小(旧版:jquery.js(v1.4.1 - 缩小))已加载,lang.js 也已加载。
所以我收到一个错误,我只是找不到它,
我必须添加: translate()
函数可以正常工作,并且 JS 不会中断。所有功能均按预期工作。 我没有任何其他错误,并且所有 JS 都工作正常...但我不想在未来感到惊讶 - 所以我需要摆脱该错误。
控制台输出chrome(在ajax请求[/query/js_lang/json]之后列出):
Uncaught SyntaxError: Unexpected token : jQuery.jQuery.extend.globalEvaljquery.js:602
jQuery.ajaxSetup.converters.text scriptjquery.js:6992
ajaxConvert jquery.js:6884
done jquery.js:6454
jQuery.ajaxTransport.send.callback jquery.js:7252
jQuery.ajaxTransport.send jquery.js:7261
jQuery.extend.ajax jquery.js:6646
(anonymous function) lang.js:116
firefox中的控制台输出(在ajax请求[/query/js_lang/json]之后列出):
invalid label
{"js_accept_terms":"Du musst unseren A...:"Kontaktname","js_agent_email":"Konta
谁能告诉我我到底错误是什么:无效标签
意味着什么?
我的脚本(lang.js)看起来像这样:
var month_names = new Array();
var day_names = new Array();
var lang_keys = new Array(
"js_accept_terms",
...
"nope"
);
var translations = new Array();
function translate(key, replace){
var translated = translations[key];
if(replace != undefined){
for(var i=0; i<replace.length; i++){
translated = translated.replace(/\%1/, replace);
}
}
return translated;
}
$.ajax({ //this is line 116
url: "/query/js_lang/json",
type: "post",
data: {keys: JSON.stringify(lang_keys)},
timeout: 7000,
success: function(data){
var trans = jQuery.parseJSON(data);
for(var key in trans){
translations[key.replace(/^js\_/, "")] = trans[key];
}
month_names = new Array(translate("jan"), translate("feb"), translate("mar"), translate("apr"), translate("may"), translate("jun"), translate("jul"), translate("aug"), translate("sep"), translate("oct"), translate("nov"), translate("dec"));
day_names = new Array(translate("sun"), translate("mon"), translate("tue"), translate("wed"), translate("thu"), translate("fri"), translate("sat"));
},
error: function(){
out_message("Error. No Language loaded!", "Error");
},
async: false
});
out_message()
显示一个css-样式化的div。我在网站的其他部分使用该功能,它运行没有任何问题。
我删除了 lang_keys
中的项目,其中返回值具有特殊字符,如“:”、元音变音、斜杠等...说:我仅使用字母数字值对其进行了测试,并得到了相同的错误.
抱歉我的英语不好;-)并感谢您的帮助
no worries! it looks like more text than it is ;-) so please go on reading!
The Main Questions are:
- What does the error: invalid label mean?
- Where is the error in my script?
now the geeky stuff begins ;-):
I have a script which loads items of an language-array (items defined via lang_keys in js - see above) from the server (server delivers a JSON version of that array), for the current language.
with JS translate("<synonym>");
function you get the required text in the current language. UPDATE: jquery 1.5 not minified (old: jquery.js (v1.4.1 - minified)) is loaded and lang.js too.
so I get an error, which I just can't find
I have to add: the translate()
function works without errors and the JS is not interrupted. All functions work as desired.
i don't have any other errors and all the JS works fine ... but i don't want to be surprised in the futur - so i need to get rid of that error.
console output in chrome (which is listed after the ajax request [/query/js_lang/json]):
Uncaught SyntaxError: Unexpected token : jQuery.jQuery.extend.globalEvaljquery.js:602
jQuery.ajaxSetup.converters.text scriptjquery.js:6992
ajaxConvert jquery.js:6884
done jquery.js:6454
jQuery.ajaxTransport.send.callback jquery.js:7252
jQuery.ajaxTransport.send jquery.js:7261
jQuery.extend.ajax jquery.js:6646
(anonymous function) lang.js:116
console output in firefox (which is listed after the ajax request [/query/js_lang/json]):
invalid label
{"js_accept_terms":"Du musst unseren A...:"Kontaktname","js_agent_email":"Konta
Can anyone tell me exactly what the error: invalid label
means?
My script (lang.js) looks like that:
var month_names = new Array();
var day_names = new Array();
var lang_keys = new Array(
"js_accept_terms",
...
"nope"
);
var translations = new Array();
function translate(key, replace){
var translated = translations[key];
if(replace != undefined){
for(var i=0; i<replace.length; i++){
translated = translated.replace(/\%1/, replace);
}
}
return translated;
}
$.ajax({ //this is line 116
url: "/query/js_lang/json",
type: "post",
data: {keys: JSON.stringify(lang_keys)},
timeout: 7000,
success: function(data){
var trans = jQuery.parseJSON(data);
for(var key in trans){
translations[key.replace(/^js\_/, "")] = trans[key];
}
month_names = new Array(translate("jan"), translate("feb"), translate("mar"), translate("apr"), translate("may"), translate("jun"), translate("jul"), translate("aug"), translate("sep"), translate("oct"), translate("nov"), translate("dec"));
day_names = new Array(translate("sun"), translate("mon"), translate("tue"), translate("wed"), translate("thu"), translate("fri"), translate("sat"));
},
error: function(){
out_message("Error. No Language loaded!", "Error");
},
async: false
});
out_message()
displays a css-styled div. I am using that function in other parts of the website, where it works without any problems.
I removed items in lang_keys
where the return value has special characters like ':', umlauts, slashes and so on ... say: I tested it with only alphanumeric values and got the same error.
sorry for my English ;-) and thanks for your help
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评论(2)
我认为问题出在返回的 JSON:
这应该看起来像这样:
服务器端可能有问题。您的 JSON 编码器不会转义双引号。
I think the problem is with the returned JSON:
This should look something like this:
There may be a problem on the server side. Your JSON encoder does not escape double quotes.
好吧,经过更多的研究和 StackOverflow 线程中的一些提示,我现在明白了:
问题是,由于某种原因,jQuery 将 ajax 接收到的数据解释为脚本(javascript) - 必须与 eval() 做一些事情 函数,它将第一个 json 对象解释为脚本,因为它看起来像 / 开头像一个对象实例。
仅当 ajax 调用在网站完全加载之前完成时,才会发生这种情况(就我而言)。好吧,通过 ajax 调用内部一些
$(function() { ... });
代码,到目前为止没有问题。技巧是在 php 脚本中的 json 字符串周围添加小括号
$return_value = "(" .json_encode($translation) . ")";
并在接收到 ajax-success 回调后将其
删除关于标签的信息:这里有一些信息
Well, after some more research and some hints in StackOverflow threads i figured it out now:
The Problem is, that jQuery interpretes the ajax received data as a script (javascript) for some reason - must have something todo with
eval()
function, which interpretes the first json object as script because it looks like / starts like an object instance.This occures (in my case) only if the ajax call is done before the site is loaded completely. well, with ajax calls inner some
$(function() { ... });
code there are no problems so far.the trick was to add brakets around the json string in the php script
$return_value = "(" . json_encode($translation) . ")";
and remove them after receiving in the ajax-success callback
just fyi about labels: here some information about that