ReferenceError: Can't find variable: should be calling method instead

Question

I try to request an URL every 5 seconds. The following code is returning ReferenceError: Can't find variable: validateUserTime

$(document).ready(function() {
  ({
    validateUserTime: function() {
      return $.get('/myurl', function(data) {});
    }
  });
  return window.setInterval((function() {
    validateUserTime();
  }), 5000);
});

I'm wondering what I'm doing wrong that is preventing a call to the method instead of doing it as a variable. Any idea?

You never define a variable validateUserTime anywhere. All you do is creating an object literal with one property but not assign it to anything. It just gets garbage-collected. Just define the variable properly: var validateUserTime = function ...;. — Felix Kling
– Felix Kling, Commented Dec 17, 2012 at 7:02

mu is too short · Accepted Answer · 2012-12-17 07:03:29Z

3

This simply defines an anonymous object and throws it away:

({
  validateUserTime: function() {
    return $.get('/myurl', function(data) {});
  }
});

That doesn't define a validateUserTime function or method. You want something like this:

var validateUserTime = function() {
  return $.get('/myurl', function(data) {});
};

or perhaps:

function validateUserTime() {
  return $.get('/myurl', function(data) {});
}

answered Dec 17, 2012 at 7:03

mu is too short

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Comments

Ming-Tang · Accepted Answer · 2012-12-17 07:04:11Z

2

In the first statement, you are using an object literal without assigning it to anything. Assign it to something to fix it.

$(document).ready(function() {
  var functions = {
    validateUserTime: function() {
      return $.get('/myurl', function(data) {});
    }
  };
  return window.setInterval((function() {
    functions.validateUserTime();
  }), 5000);
});

answered Dec 17, 2012 at 7:04

Ming-Tang

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1 Comment

Martin Over a year ago

Wondering how could I perform the get request first and then wait 5000 milliseconds. This example waits for the 5000 ms first and then makes the first request.

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