如何在nodeJS中添加while（1）循环

Question

In NODEJS I want a function that will keep executing after every 5 seconds, and I used while(1) loop with a time out of 5 seconds. But its not working.

    while(1){

            var ms=4000;
            ms += new Date().getTime();
            while (new Date() < ms){}

            execute(12345,0);

    }

Answer 1

In Javascript you can create some tasks to be called on every interval needed using setInterval :

setInterval(functionToCallOnInterval, intervalInMilliSeconds);

 setInterval(function() { console.log('called about every 5 seconds'); }, 5000); setInterval(myFunc, 6000); function myFunc() { console.log('called about every 6 seconds'); } 

Behold

setInterval timing is not accurate so you can't count on this for vital situations.

Answer 2

You should use setInterval instead of WHILE loop.

setInterval(function(){
  console.log('test');
},5000);

This 5000 is time in ms!!

Answer 3

The problem with your code is, you are running a thread with infinite execution and thus it will freeze the browser. Instead if you will use setInterval() then a new thread will be run at regular intervals in which your function will be executed. Hope you got the concept well.