console 命令行工具 X clear

console

class Sup{
  
    constructor(name,age){
      this.name = name;
      this.age = age;
    }
    
    say(){
      alert(this.name+":"+this.age);
    }
  }
  
  
  
  
  function test(){
    let s = new Sup("xiaoxin","23");
  
   s.say();
  }

<button onclick =  'test()'>按钮</button>