Determine whether client browser has java installed and can launch applets

Answer 1

Make in your applet a method

public boolean isRunning() { return true; }

Now create an applet:

And now wrap this code in some helper function

try {
  var x = document.getElementById('someId').isRunning()
  return x;
} catch(e) {
  return false;
}


Why this works? If applet runs it will return true. If applet doesn't run or Java is not supported you'll get an exception, so you'll get false.
    

             

                                                        
            
            

              
                
                0
              
                   
                
               讨论(0)
              
                                                  
              
              

                          
             
       
          
              
                                       

     查看其它4个回答


            
                         

                    



               
            

    发布评论:
    

         
                        
    
    
提交评论 
  
  

                    
                    

                    

                        

                        
                         加载中...
                        
                    
                
          
                              			
        
        
        

          

            
            

              
              

            
    


                                 
              
            
                          
    

        
         

                验证码
                

                  
                
                

                   看不清?
                
              
                                  

                    
   
                 
             
              
提交回复
            
          
        
      
       
      
    
    

          
 
     
 

        
热议问题