JavaScript delete 方法 JavaScript 小于运算符 (<) JavaScript 逻辑运算符 JavaScript delete 方法 <!DOCTYPE html> <html> <body> <p id="demo"></p> <script> var cricketer = { name:"John", rank:3, points: 800 }; delete cricketer.rank; document.getElementById("demo").innerHTML = cricketer.name + " has " + cricketer.rank + " rank."; </script> </body> </html> JavaScript 小于运算符 (<) JavaScript 逻辑运算符
