Javascript 在警告框中转储 jquery 对象
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dump jquery object in an alert box
提问by planet x
I am not quite adept in maneuvering jQuery, and it came to a point that I need to debug a program that was passed down from me without a documentation.
我不太擅长操纵 jQuery，因此我需要调试一个没有文档的程序。
I have this var a, an object, that I really want to know the content of its collection. In my mind I need a function like foreach()in PHP to iterate over this object variable. Upon researching I end up in using jQuery.each(). Now I can clearly iterate and see what was inside var a.
我有这个 var a对象，我真的很想知道它的集合的内容。在我看来，我需要一个像foreach()PHP一样的函数来迭代这个对象变量。经过研究，我最终使用了jQuery.each()。现在我可以清楚地迭代并查看 var a 中的内容。
However, it was kind of annoying to alert once every value on the var a. What I wanna know if it's possible to display all the contents in just one pop of alert box?
但是，对 var a上的每个值发出一次警报有点烦人。我想知道是否可以在弹出的警告框中显示所有内容？
Here is my code:
这是我的代码：
$.each(a, function(index, value) {
alert(index + ': ' + value);
});
The var acontains infos such as:
var a包含以下信息：
creationdate: date_here
id: SWFUpload
modificationdate: date_here
type: .jpg
index: 0
name: uploaded_filename.jpg
size: size_in_bytes
BTW: The var ais called via file upload script.
顺便说一句： var a是通过文件上传脚本调用的。
回答by mgibsonbr
Why don't you just accumulate the values in an array, then display the whole array (for instance, using JSON)? Example:
为什么不将值累积在一个数组中，然后显示整个数组（例如，使用 JSON）？例子：
var acc = []
$.each(a, function(index, value) {
acc.push(index + ': ' + value);
});
alert(JSON.stringify(acc));
In any case, I'd suggest using a debug tool like Firebug. So you could just use console.log(a)and be able to navigate freely through the objects's fields.
无论如何，我建议使用像Firebug这样的调试工具。所以你可以只使用console.log(a)并且能够在对象的字段中自由导航。
回答by Sudhir Bastakoti
In firefox you could try:
在 Firefox 中，您可以尝试：
alert(yourObject.toSource());
OR you could use some plugin: See: jQuery Dump Plugin
或者你可以使用一些插件：参见：jQuery Dump Plugin
