passing arguments with a call back function

Question

function images(url, somextra, callback)
{
    var img = new Image();
    img.onload = function() {
        callback(url , somextra);   
    };
}

function call(url, extra)
{
}

images(someurl, stuffs, call);

When I am passing 2 arguments my programs just hangs. How can I pass two arguments and a callback function in my images function?

It's not the "two arguments", this would act just the same with one argument. You're not loading the image at all... try adding img.src = url or something. — Benjamin Gruenbaum
– Benjamin Gruenbaum, Commented Jul 25, 2014 at 18:56
your code just seems to pass arguments with a callback function — lante
– lante, Commented Jul 25, 2014 at 18:59

user3861247 · Accepted Answer · 2014-08-18 10:44:33Z

1

You should clear you concept !!!! it does not matters if one or more than one argument.

img.src = url

try to add image url after imag.onload

answered Aug 18, 2014 at 10:44

user3861247

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Comments

iamrobin · Accepted Answer · 2014-07-25 19:08:06Z

1

You are setting a the callback up on the onload event, but you are not loading the image.

Try setting up the source for the image like this.

function images(url ,somextra , callback)
{
    var img = new Image();
    img.onload = function(){
         callback(url , somextra);   
    };
    // set the source url here
    img.src = "example/url/image.png"
 }

 function call(url , extra){

 }
 images( someurl , stuffs , call);

Otherwise your onload event never fires and therefore the callback is not called.

answered Jul 25, 2014 at 19:08

iamrobin

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