CODEWITHSUNDEEP
javascriptnode.jssettimeout
Dexter
Dexter

Reputation: 1796

How to callback function in set timeout node js

I have to call a function with the callback in set timeout for that I have written code like this 

getData(a, b, function(err, rlt) {
    if (err) {
        console.log(err)
    } else {
        // call next function after 35 seconds 
        settimeout(getData(c, d, function(err, rlt) {
            if (err) {
                console.log(err)
            } else {
                // call next function after 10 seconds
                settimeout(getData(x, y, function(err, rlt) {
                    if (err) {
                        console.log(err)
                    } else {
                        console.log(rlt);
                    }
                }), 10000);
            }
        }), 35000)
    }
});


function getData(parms1, parms2;, callback) {
    return callback(null, parms1 + parms2);
}

I have written code similar to this but my problem is that set timeout not working its execute function immediately not wait for 35 seconds and 10 seconds.

I don't know what wrong I am doing and if you know any better way to do please help me.

Upvotes: 0

Views: 1963

Answers (3)

Rahul Dapke
Rahul Dapke

Reputation: 355

I think you miss spell of settimeout(setTimeout) Try this code: 

 var callback = function (err, res) {
        if(err){
           console.log (err);
        }else{
              setTimeout(function() {
                 callback()
                 console.log ("start callback function");
                 }, 10000)
        }
    };

Upvotes: 0

NullPointer
NullPointer

Reputation: 7368

Below is the correct syntax for setTimeout.Your method should be always as a first argument of setTimeout function

setTimeout(function(){myMethod(parameter);},3000);

Full Reference: http://www.java2s.com/Tutorials/Javascript/Node.js_Tutorial/0270__Node.js_setTimeout_setInterval.htm

Upvotes: 1

felixbuenemann
felixbuenemann

Reputation: 639

You must wrap your calls to getData in an anonymous function, e.g. setTimeout(function(){ getData(x, y, …) }, 1000).

Upvotes: 1

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