jQuery dynamic image loading

Question

**I try to load an image when I type a reference in an input.

Answer 1

You should go ahead and cache the image (pre-load it into a variable) so that you can access it quickly. You also might want to make use of jQuery's load() function to tell you when the image has been loaded. Here's a quick example:

var theCachedImage = new Image();
/* Boolean that tells us whether or not the image has finished loading. */
var theBoolean;
$(theCachedImage).load(function () {
    In this callback, the image has finished loading.Set "theBoolean"
    to true.
    theBoolean = true;
});
theCachedImage.src = "your/image/source";

Like Kevin mentioned, the fadeIn is working. There's just nothing to fade in.

EDIT:

In your keyUp function, simply check the value of the conditional boolean and perform actions accordingly. Example:

$('#id').keyup(function () {
    if (theBoolean) {
        $('#img').html('<img src="http://www.site.com/' + $(this).val() + '.jpg"
width="200px">');
        $('#img').hide().fadeIn('slow');
    } else {
        /* Your image hasn't been loaded yet. Do something to let the user know
         * or figure out the appropriate action to take. */
    }
});