Passing a string with a Newline escape in it (\n) using chrome.tabs.executeScript

[Siddhesh]

So i need to inject a global variable into my page in my chrome
extension.

chrome.tabs.executeScript(null,{code:"var Urls='"+Urls+"';"});

The global variable gets injected as long as Urls contains a string
with no newline characters. But the moment it is populated with some
string content spanning more than a line, it refuses to work.

Reasons and workarounds plz. Fairly new to chrome and extensions.

[Łukasz Łoboda]

This  Url variable is undefined when this code is executed?

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[Mike West]

Hi Siddhesh,

Injecting a string with newlines would end up writing the following code:

    var Urls = "This is a string

with newlines";

That isn't valid JavaScript. You want the string that's executed to look like "This is a string\nwith newlines." Try writing something like this:

    var to_inject = urls.replace(/\n/, '\\n');

    chrome.tabs.executeScript(null, { code: 'var Urls = "' + to_inject + '";"});

That will escape the literal newline with "\n" in the string that's written out and executed.

-Mike