CODEWITHSUNDEEP
node.jssettimeout
NV4RE
NV4RE

Reputation: 194

how I extend setTimeout on nodeJS

I want to shutdown my computer 1 min after I push button, and if I push button again it will shutdown after it push last time.

for(var i=1; i<=10; ++i){
 setDelay();
}

var nn;
function setDelay(){
 clearTimeout(nn);
 nn = setTimeout(function(){
   console.log("shutdown");
 }, 60000);
}

But my code have another "setTimeout" too. Will it work fine ?, or will it damage my other setTimeout ?

Upvotes: 4

Views: 1611

Answers (1)

jfriend00
jfriend00

Reputation: 708026

I'd suggest you create an object that allows you to add time to it:

function Timer(t, fn) {
   this.fn = fn;
   this.time = Date.now() + t;
   this.updateTimer();
}

Timer.prototype.addTime = function(t) {
    this.time += t;
    this.updateTimer();
}

Timer.prototype.stop = function() {
    if (this.timer) {
        clearTimeout(this.timer);
        this.timer = null;
    }
}

Timer.prototype.updateTimer = function() {
    var self = this;
    this.stop();
    var delta = this.time - Date.now();
    if (delta > 0) { 
        this.timer = setTimeout(function() {
            self.timer = null;
            self.fn();
        }, delta);
    }
}

Then, you can use it like this:

var timer = new Timer(60000, function() {
    console.log("shutdown");
});

// add one second of time
timer.addTime(1000);

// add one minute of time
timer.addTime(1000 * 60);

Upvotes: 4

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