44 lines
1.2 KiB
JavaScript
Executable File
44 lines
1.2 KiB
JavaScript
Executable File
(function($) {
|
|
|
|
// Input: Array of JSON objects {selector, offset, callback}
|
|
|
|
Materialize.scrollFire = function(options) {
|
|
|
|
var didScroll = false;
|
|
|
|
window.addEventListener("scroll", function() {
|
|
didScroll = true;
|
|
});
|
|
|
|
// Rate limit to 100ms
|
|
setInterval(function() {
|
|
if(didScroll) {
|
|
didScroll = false;
|
|
|
|
var windowScroll = window.pageYOffset + window.innerHeight;
|
|
|
|
for (var i = 0 ; i < options.length; i++) {
|
|
// Get options from each line
|
|
var value = options[i];
|
|
var selector = value.selector,
|
|
offset = value.offset,
|
|
callback = value.callback;
|
|
|
|
var currentElement = document.querySelector(selector);
|
|
if ( currentElement !== null) {
|
|
var elementOffset = currentElement.getBoundingClientRect().top + document.body.scrollTop;
|
|
|
|
if (windowScroll > (elementOffset + offset)) {
|
|
if (value.done !== true) {
|
|
var callbackFunc = new Function(callback);
|
|
callbackFunc();
|
|
value.done = true;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}, 100);
|
|
};
|
|
|
|
})(jQuery); |