点击运行
<!DOCTYPE html> <html> <body> <h2>JavaScript typeof</h2> <p>typeof 运算符把对象、数组或 null 返回 object。</p> <p>typeof 运算符不会把函数返回 object。</p> <p id="demo"></p> <script> document.getElementById("demo").innerHTML = typeof {name:'Bill', age:62} + "<br>" + typeof [1,2,3,4] + "<br>" + typeof null + "<br>" + typeof function myFunc(){}; </script> </body> </html>
运行结果
