css - Is it possible to generate a file with javascript and send it to server? -

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is possible generate file javascript , send server? have section in web page user can modify style of page, , want generate css file style configuration before send server. possible? thanks!

var blob = new blob(["css content"],{type:"text/css"}); var formdata = new formdata() formdata.append("file",blob,"filename");  var xhr = new xmlhttprequest(); xhr.open('post', '/server', true); xhr.onload = function(e) { /**get answer server*/}; xhr.send(formdata);

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