javascript 将 json 分配给变量
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Assigning json to variable
提问by LarsVegas
Ok, some explanation. Even though I don't think it has anything to do with the problem itself. I have a small django project that maps some data using leaflet. On a mouseover some ajax functionality is added, using the dajax(which is a "lightweight library to implement AJAX inside django projects") framework. The call itself looks like this:
好的，一些解释。尽管我认为这与问题本身没有任何关系。我有一个使用传单映射一些数据的小型 django 项目。在鼠标悬停时添加了一些 ajax 功能，使用dajax（这是一个“在 django 项目中实现 AJAX 的轻量级库”）框架。调用本身如下所示：
dajax.add_data(simplejson.dumps(series), 'my_test_flot')
My js function receives json data which looks like this (using alert)
我的 js 函数接收如下所示的 json 数据（使用alert）
[{"color": "#dddd00",
"data": [[-0.5, -20.5]],
"label": "Tweede Zandlaag"}]
The object has more data to it but the problem is not with the object. When I copy/paste the data directly into the function var series = []the behaviour is as aspected. As aspected means, the graph I'm drawing with flotis actually being drawn. Otherwise the graph remains empty.
对象有更多数据，但问题不在于对象。当我将数据直接复制/粘贴到函数中时var series = []，行为是方面的。作为方面的意思，我正在绘制的图形flot实际上正在绘制。否则图形保持为空。
function my_test_flot(dat) {
function MyFormatter(v, xaxis) {
return " ";
}
$(function () {
alert(dat)
var series = dat; // here lies the problem, but why?
...
Can anyone help?
任何人都可以帮忙吗？
回答by LarsVegas
回答by Alexander Gessler
This does not copy the data - it just makes seriesa reference to the same object as dat. Therefore, if you later modify the object, all users retaining references to it see the changes. This is probably what causes your trouble.
这不会复制数据 - 它只是series引用与dat. 因此，如果您稍后修改该对象，所有保留对它的引用的用户都会看到更改。这可能是导致您遇到麻烦的原因。
