javascript 逻辑运算符 javascript 比较运算符 javascript 位运算符 javascript 逻辑运算符 <html> <body> <script type="text/javascript"> <!-- var a = true; var b = false; var linebreak = "<br />"; document.write("(a && b) => "); result = (a && b); document.write(result); document.write(linebreak); document.write("(a || b) => "); result = (a || b); document.write(result); document.write(linebreak); document.write("!(a && b) => "); result = (!(a && b)); document.write(result); document.write(linebreak); //--> </script> <p>Set the variables to different values and different operators and then try...</p> </body> </html> javascript 比较运算符 javascript 位运算符