Javascript AJAX 包含带有 eval 的文件 [英] Javascript AJAX include file witth eval
问题描述
Suppose I have
1) a HTML document.
2) This HTML document loads Javascript file "code.js" like this:
<script src="code.js">
3) User clicks button which runs "fetchdata" function in "code.js",
4) "fetchdata" function looks like this:
var xmlhttp = new XMLHttpRequest();
xmlhttp.onreadystatechange = function() {
if (xmlhttp.readyState==4) {
myjsdata = xmlhttp.responseText;
}
}
xmlhttp.open("GET", 'http://www.example.com/data.js', false);
xmlhttp.send(null);
...
Now how do I do the following successfully:
I want to insert/eval my Javascript in a way, so all functions in "code.js" including "fetchdata" and functions defined above/below can access the data (structures, declarations, pre-calculated data values etc.) in "data.js".
(If this was possible, it would be idea since I could wait loading the actual JS data file until the user explicitly requests it.)
jQuery always has something for everything:
http://api.jquery.com/jQuery.getScript/
Loads a javascript file from url and executes it in the global context.
edit: Oops, didn't see that you weren't using jQuery. Everyone is always using jQuery...
Just do:
var scrpt = document.createElement('script');
scrpt.src='http://www.example.com/data.js';
document.head.appendChild(scrpt);
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