SetTimeout issue in Node.js

Question

I've the following code which runs fine under Chrome (V8) but fails inside node:

var id;
id = setTimeout("TimeoutHandler()", 10);
console.log ('SET');

function TimeoutHandler()
{
  clearTimeout(id);
  console.log ('CLEAR');
}

Chrome output:

SET 
CLEAR

Nodejs output:

SET
timers.js:110
    first._onTimeout();
          ^
TypeError: Property '_onTimeout' of object [object Object] is not a function
    at Timer.listOnTimeout [as ontimeout] (timers.js:110:15)

Any ideas why? Thanks

Interesting that NodeJS doesn't type-check the argument. It could provide a clearer error message if it did. — user1106925
– user1106925, Commented May 9, 2013 at 17:32

Bridge · Accepted Answer · 2014-05-27 15:13:00Z

23

Unlike in most browsers, setTimeout in node.js does not accept a string parameter. You must pass it a function. For example:

function TimeoutHandler()
{
  clearTimeout(id);
  console.log ('CLEAR');
}

var id;
id = setTimeout(TimeoutHandler, 10);
console.log ('SET');

edited May 27, 2014 at 15:13

Bridge

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answered May 9, 2013 at 17:29

Aaron Dufour

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