点击运行
<!DOCTYPE html> <html> <body> <h1>JavaScript 比较</h1> <p>NOT 运算符（！）对于 false 语句返回 true，对于 true 语句返回 false。</p> <p id="demo"></p> <script> var x = 6; var y = 3; document.getElementById("demo").innerHTML = !(x === y) + "<br>" + !(x > y); </script> </body> </html>
运行结果
