javascript - Issue on restrict copy paste junk characters and symbols in text area -

i have text area doesn't have max length. in text area restricting symbols , junk characters on keypress checking charcode>160 , able restrict junk symbols , characters. when trying stop copy pasting junk values, n't happen. below have copied code tried keypress , copy paste.

$("input[type=text], textarea").bind("keypress paste", function(event) {         if (event.charcode>160 || !event.charcode) {             alert("not allowed characters/symbols");             event.preventdefault();         } }) 

and junk characters -- !íßÓÜØúƤ etc.