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Warn when the website is in quirks mode

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Summary:
KaTeX doesn't work correctly in quirks mode. Warn in the console and disable
rendering if that happens.

Test Plan:
 - Make sure the test still loads and renders math
 - Make sure a warning is thrown when the doctype is removed, and no more math
   is rendered
 - Make sure the tests pass both on the web and with `make test`

Reviewers: alpert

Reviewed By: alpert

Differential Revision: http://phabricator.khanacademy.org/D13192
This commit is contained in:
Emily Eisenberg 2014-09-17 15:13:56 -07:00
parent b7e55607cc
commit ea5ee95dbe
1 changed files with 14 additions and 0 deletions
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14
katex.js
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@ -25,6 +25,20 @@ var render = function(toParse, baseNode) {
baseNode.appendChild(node); baseNode.appendChild(node);
}; };
// KaTeX's styles don't work properly in quirks mode. Print out an error, and
// disable rendering.
if (typeof document !== "undefined") {
if (document.compatMode !== "CSS1Compat") {
typeof console !== "undefined" && console.warn(
"Warning: KaTeX doesn't work in quirks mode. Make sure your " +
"website has a suitable doctype.");
render = function() {
throw new ParseError("KaTeX doesn't work in quirks mode.");
};
}
}
/** /**
* Parse and build an expression, and return the markup for that. * Parse and build an expression, and return the markup for that.
*/ */