From my research i believe that the following code should work.
I am dynamically adding images to a page using jquery, which pulls these images from a JSON file. For this reason I need to use jQuery's on() method to allow this hover to work.
I am following the guidance in the jquery docs -- see here.
$(document).on('hover', ".portrait-image", function() {
console.log('hi');
}, function () {
console.log('bye');
});
This code repeatedly shows bye while never logging hi.
hover is not an event you can use with on. It is only a shorthand for the events mouseenter and mouseleave. So you have to use them with the correct names for your delegation.
As from the documentation:
The .hover() method binds handlers for both mouseenter and mouseleave events. You can use it to simply apply behavior to an element during the time the mouse is within the element.
So rewrite your listener like this:
$(document).on('mouseenter', '.portrait-image', function() {
console.log('hi');
});
$(document).on('mouseleave', '.portrait-image', function() {
console.log('bye');
});
Or like this:
$(document).on({
'mouseenter': function() {
console.log('hi');
},
'mouseleave' function() {
console.log('bye');
}
}, '.portrait-image');
To explain why only bye is shown:
Like seen in the documentation, on has up to four parameters. The last two are data and handler. Your hi callback is interpreted as data and will be ignored. The handler is the actual bye callback for the handler.
hover is a pseudo name in jQuery. It will do something like this:
$(document).on('mouseenter mouseleave', '.portrait-image', function() {
console.log('hi');
});
This means every time you enter OR leave, it will print bye.