(function($) {
$.mamewaza_scroll = function(cls) {
if($.isEmptyObject(cls) ) {
return "";
}
var daemon = function() {
var y = $(window).scrollTop() + $(window).height();
for(var i = arr.length - 1; i >= 0; i--) {
if(arr[i].y > y) {
break;
}
arr[i].elm.addClass(arr[i].cls);
arr.splice(i, 1);
}
if(arr.length == 0) {
$(window).unbind("scroll", daemon);
}
};
var arr = [];
var y = $(window).scrollTop() + $(window).height();
for(var i = 0; i < cls.length; i++) {
if(!cls[i] || !$("." + cls[i])[0]) {
continue;
}
var j = 0;
$("." + cls[i]).each(function() {
var y_this = $(this).offset().top;
if(y_this <= y) {
return "";
}
$(this).removeClass(cls[i]);
arr.push( {
"y": y_this,
"elm": $(this),
"cls": cls[i],
} );
} );
}
if(arr.length == 0) {
return "";
}
//sort
arr.sort(function(a, b) {
return b.y - a.y;
} );
$(window).bind("scroll", daemon);
daemon();
};
})(jQuery);
一覧を見る