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Convert a JS string into UTF-8

Suppose you have a JS string and need to encode it into UTF-8. A good example is the twitter API that allows you to post a message. The text of the message must be added to the POST url using the 'status' parameter and the contents of that parameters must be escaped UTF-8. Use the following code to convert your text to UTF-8:

function JSStringToUTF8(aStr) {

  var converter = Components.classes["@mozilla.org/intl/scriptableunicodeconverter"]

  converter.charset = "utf-8" ;

  return converter.ConvertFromUnicode(aStr);


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