I have to encode a file name in javascript. File name is expected to have any unicode characters.

For example "####新奥尔良路易斯安那 ~`!@#$%^&()_-=+}]{[;.,.doc" 

If I assign this to Iframe src then some meta characters are getting encoded. Like '#' is encoded as '%25'. Chinese char remain as it is.

Therefore I cannot use escape(filename) because it is aswell encoding chinese chars, hence the file not found exception is thrown.

I want to selectively escape characters like only key board non alpha numeric? Is there any way to find only keyboard non alpha numeric values from a regular experssion?

Any help will be much appreciated. 

Thanks in Advance,

Naga.

While this certainly isn't a universal solution it may suit your needs.  I only attemped to match the non-alphanumerics in the ASCII range. And note not all those characters are affected by the escape function.

function escapeNonAN(propertyName)
{
  function escapeMatch(match)
  {
    return  escape(match);
  }
  return propertyName.replace(/[!-\x2d\/\[\`{~]/g, escapeMatch);
}

escapeNonAN("####新奥尔良路易斯安那 ~`!@#$%^&()_-=+}]{[;.,.doc")


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Michael

"In theory, theory and practice are the same. In practice, they are not."
Albert Einstein