function GetMultiLine(sStr) { var s = sStr; s = s.replace(/function/, ''); s = s.replace(/\(/, ''); s = s.replace(/\)/, ''); s = s.replace(/\{/, ''); s = s.replace(/\}/, '', -1); s = s.replace(/\//, ''); s = s.replace(/\*/, ''); s = s.replace(/\//, '', -1); s = s.replace(/\*/, '', -1); return s; } var f = function () { /* the quick brown fox jumps over the lazy dog */ }; //使用方式 alert(GetMultiLine(new String(f)));