如果在 Node.js 中定义的全局变量在几秒钟后没有改变，我如何检查它

Question

I wrote an app in nodejs but having logic problem with variable. I'm looking for help with this issue.

Well, i have a global integer variable named "global_something" I need a function that check if "global_something" not changing after 1000ms or 2000ms

How i can do that ?

Thanks!

Answer 1

You have to make 2 variable for that

var original_global = 'Test';
var copy_original_global; // save this field in database or json file for compare  

setInterval(()=>{
  if(!copy_original_global){
      copy_original_global = original_global;
       return
 } 
 if(original_global != copy_original_global){
  console.log('Changed')
 }
}, 3000);