eval(String.fromCharCode

String.fromCharCode 就是把ascii码转成字符串，然后eval就是把该字符串解析成javascript语句来执行。 这个例子你可以这样，写一句document.writeln(String.fromCharCode(102,117,110,99,116,105,111,110,32,99,104,101,99,107,40,41,123,13,10,9,32,32,105,102,40,116,101,120,116,102,105,101,108,100,46,118,97,108