當到達特定的ID時，隱藏滾動的div元素

Question

我有一個修復div，當我向下滾動時，當我滾動時，需要將它隱藏到特定的ID。

Answer 1

試試這個：

$.fn.isOnScreen = function() { 
    var win = $(window); 
    var viewport = { 
     top: win.scrollTop(), 
     left: win.scrollLeft() 
    }; 
    viewport.right = viewport.left + win.width(); 
    viewport.bottom = viewport.top + win.height(); 
    var bounds = this.offset(); 
    bounds.right = bounds.left + this.outerWidth(); 
    bounds.bottom = bounds.top + this.outerHeight(); 
    return (!(viewport.right < bounds.left || viewport.left > bounds.right || viewport.bottom < bounds.top || viewport.top > bounds.bottom)); 
}; 

而且使用這樣的：

$(window).scroll(function() { 
    if ($('#sampleId').isOnScreen() == true) { 
     $('.fixDiv').hide(); 
    } 
    else{ 
     $('.fixDiv').show(); 
    } 
});