Only eval a specific js function in a string

Asked Apr 13 '16 at 03:25

Active Apr 13 '16 at 03:29

Viewed 54 times

I'm using this override to get the content of a js file as a string.

Content of the variable where the js file is loaded into:

<html>
<body>
//META{"name":"testPlugin"}*//
function testPlugin() {
    var settings = {
        testSettingBool : true,
        testSettingInt : 123,
        testSettingStr : "Test String",
    }
}
testPlugin.prototype.getName = function() { return "Test"; };
testPlugin.prototype.getDescription = function() { return "Test Description"; };
testPlugin.prototype.getVersion = function() { return "1.0"; };
</body>
</html>

Now i only want to eval a special function in that string like

testPlugin.prototype.getVersion();

Thanks for any help :)

edited May 23 '17 at 12:31

Community

asked Apr 13 '16 at 03:25

Bluscream

"Content of the variable where the js file is loaded into".... I don't get that. So you're saying that first snippet is what's being eval'd? – anthonygore Apr 13 '16 at 03:55
that first snippet is the content of [this website](https://cdn.rawgit.com/Bluscream/BetterDiscord-Plugins-and-Themes/master/src/plugins/testPlugin.plugin.js) for example. And since the text formatting can always change there is no sense in using regex. – Bluscream Apr 13 '16 at 03:57
Okay, so your question is how to eval only part of a string? – anthonygore Apr 13 '16 at 04:03
I see no other way to get the version number from it, so yes. – Bluscream Apr 13 '16 at 04:45
You can't eval just part of the string – anthonygore Apr 13 '16 at 04:58
can i make it run in a different namespace then? so it doesn't register the functions in `window.*`? – Bluscream Apr 13 '16 at 05:17
you could run it in an iframe – anthonygore Apr 13 '16 at 05:22
So i create a iframe, eval the whole file in there, call the function in the iframe and then move it back to the top frame? – Bluscream Apr 13 '16 at 06:13
You could try that. eval'ing in the iframe will keep the code out of your window.* context. – anthonygore Apr 13 '16 at 06:19
sounds like a workaround, will try :D – Bluscream Apr 13 '16 at 06:37

Only eval a specific js function in a string

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