Replace special charecters with '-' in the given string using JavaScript

 <script language="JavaScript">
    var temp1;
    var temp = new String('Thi\'s is a te!!!!s$t st>ri9ng... S"o??? What#...');
    document.write(temp + '<br>');
    temp =  temp.replace(/[^a-zA-Z 0-9]+/g,'-');
    document.write(temp + '<br>');
    temp1=temp.replace(/\s/g,'-');
    document.write(temp1 + '<br>');
    </script>
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ఇట్లు మీ,
చంద్రశేఖర్.