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UPDATE : Once I looked at the problem in Firebug, I found my mistake immediately. And it was an embarrassing unmatched double quote that I must have deleted somehow. I had been using Chrome's developer window. Very sorry for using up your resources. But, lesson learned! ("I hope.) What is the best way for me to escape html characters that I want to send to my server? I am using jQuery, .ajax(), and jsonp. I'm writing a bookmarklet which sends parts of the current page's html to my server. Here is the ajax call: jQuery.ajax({ url: 'http://www.my_server.com/file.php?callback=?', dataType: 'jsonp', data: { someHtml: escape(jQuery(this).html().substring(0,1000)) }, success: function() { // stuff }, beforeSend: function(xhr) { xhr.setRequestHeader('Content-type','text/html'); }, error: function() { // stuff } }); I need to use JSONP and therefore I can't use POST, and this is why I'm truncating the html data. Things work if the html is "nice", but if it contains characters javascript doesn't like, then I have problems. I fixed my ' problem by using escape(), but now I think I'm having newline and tab problems. Chrome's dev console gives me the same error: Uncaught SyntaxError: Unexpected token < which I assume means some character is causing things to break out of javascript. I have tried the following: escape(), encodeURI/Component(), serialize(), text(), but nothing has worked yet. At first, I didn't use beforeSend, but thought I should try it, but no difference. Currently, I'm stuck with some html which has a line break, then a tab, then a couple of spaces. I have tried replacing these characters using replace(): ... .substring(0,1000).replace(/(\r\n|[\r\n])/g,'') I found this regex string on another site which is supposed to replace various combinations of

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