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| <!-- example - isVisibleInWindow.html v1 --> | |
| <!doctype html> | |
| <html lang="pt-br"> | |
| <head> | |
| <meta charset="utf-8" /> | |
| <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no"> | |
| <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css" integrity="sha384-Gn5384xqQ1aoWXA+058RXPxPg6fy4IWvTNh0E263XmFcJlSAwiGgFAW/dAiS6JXm" crossorigin="anonymous"> | |
| <title>bootstrap starter template</title> | |
| <style> | |
| .container-9999px{ | |
| background: #aaaaaa; | |
| height: 9999px; | |
| width: 9999px; | |
| align-items: center; | |
| display: flex; | |
| justify-content: center; | |
| } | |
| .inner-block{ | |
| background: #000000; | |
| height: 500px; | |
| width: 500px; | |
| } | |
| </style> | |
| </head> | |
| <body> | |
| <div class="container-9999px"> | |
| <div class="inner-block"></div> | |
| </div> | |
| <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script> | |
| <script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.12.9/umd/popper.min.js" integrity="sha384-ApNbgh9B+Y1QKtv3Rn7W3mgPxhU9K/ScQsAP7hUibX39j7fakFPskvXusvfa0b4Q" crossorigin="anonymous"></script> | |
| <script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/js/bootstrap.min.js" integrity="sha384-JZR6Spejh4U02d8jOt6vLEHfe/JQGiRRSQQxSfFWpi1MquVdAyjUar5+76PVCmYl" crossorigin="anonymous"></script> | |
| <script src="js/isVisibleInWindow.min.js"></script> | |
| <script> | |
| $(function(){ | |
| setInterval(function(){ | |
| console.log( isVisibleInWindow( $('.inner-block') ) ); | |
| }, 100); | |
| }); | |
| // get-scrolls.min.js v1 | |
| function getScrollX(){return null!=window.pageXOffset?window.pageXOffset:(document.documentElement||document.body.parentNode||document.body).scrollLeft}function getScrollY(){return null!=window.pageYOffset?window.pageYOffset:(document.documentElement||document.body.parentNode||document.body).scrollTop} | |
| // between.min.js v1.1.1 | |
| function between(c,d,e,f=!1){let g=Math.min.apply(Math,[d,e]),h=Math.max.apply(Math,[d,e]);if(!0==f)return c>=g&&c<=h;return c>g&&c<h}Number.prototype.between=function(c,d,e=!1){return between(this,c,d,e)},String.prototype.between=function(c,d,e=!1){return between(this,c,d,e)}; | |
| // isVisibleInWindow.min.js v1.0.1, require between.min.js v1.1.1 | |
| function isVisibleInWindow(a){'string'==typeof a&&(a=$(a).eq(0));let b={x:getScrollX(),y:getScrollY()},c={x:$(window).innerWidth(),y:$(window).innerHeight()},d={max_x:b.x+c.x,min_x:b.x,max_y:b.y+c.y,min_y:b.y},e={x:a.offset().left,y:a.offset().top},f={x:a.innerWidth(),y:a.innerHeight()},g={max_x:e.x+f.x,min_x:e.x,max_y:e.y+f.y,min_y:e.y},h=!1,i=!1;return g.min_x.between(d.min_x,d.max_x,!0)&&(h=!0),g.max_x.between(d.min_x,d.max_x,!0)&&(h=!0),d.min_x.between(g.min_x,g.max_x,!0)&&(h=!0),d.max_x.between(g.min_x,g.max_x,!0)&&(h=!0),g.min_y.between(d.min_y,d.max_y,!0)&&(i=!0),g.max_y.between(d.min_y,d.max_y,!0)&&(i=!0),d.min_y.between(g.min_y,g.max_y,!0)&&(i=!0),(d.max_y.between(g.min_y,g.max_y,!0)&&(i=!0),h&&i)} | |
| </script> | |
| </body> | |
| </html> |
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| // isVisibleInWindow.js v1.0.1, require between.min.js v1.1.1 | |
| function isVisibleInWindow(element) { | |
| if (typeof element == 'string') { | |
| element = $(element).eq(0); | |
| }; | |
| let screenPosition = { | |
| x: getScrollX(), | |
| y: getScrollY() | |
| }, | |
| screenSize = { | |
| x: $(window).innerWidth(), | |
| y: $(window).innerHeight() | |
| }, | |
| screenRectangle = { | |
| max_x: screenPosition.x + screenSize.x, | |
| min_x: screenPosition.x, | |
| max_y: screenPosition.y + screenSize.y, | |
| min_y: screenPosition.y, | |
| }, | |
| containerPosition = { | |
| x: element.offset().left, | |
| y: element.offset().top | |
| }, | |
| containerSize = { | |
| x: element.innerWidth(), | |
| y: element.innerHeight() | |
| }, | |
| containerRectangle = { | |
| max_x: containerPosition.x + containerSize.x, | |
| min_x: containerPosition.x, | |
| max_y: containerPosition.y + containerSize.y, | |
| min_y: containerPosition.y, | |
| }, | |
| visibleX = false, | |
| visibleY = false; | |
| if (containerRectangle.min_x.between(screenRectangle.min_x, screenRectangle.max_x, true)) { | |
| visibleX = true; | |
| }; | |
| if (containerRectangle.max_x.between(screenRectangle.min_x, screenRectangle.max_x, true)) { | |
| visibleX = true; | |
| }; | |
| if (screenRectangle.min_x.between(containerRectangle.min_x, containerRectangle.max_x, true)) { | |
| visibleX = true; | |
| }; | |
| if (screenRectangle.max_x.between(containerRectangle.min_x, containerRectangle.max_x, true)) { | |
| visibleX = true; | |
| }; | |
| if (containerRectangle.min_y.between(screenRectangle.min_y, screenRectangle.max_y, true)) { | |
| visibleY = true; | |
| }; | |
| if (containerRectangle.max_y.between(screenRectangle.min_y, screenRectangle.max_y, true)) { | |
| visibleY = true; | |
| }; | |
| if (screenRectangle.min_y.between(containerRectangle.min_y, containerRectangle.max_y, true)) { | |
| visibleY = true; | |
| }; | |
| if (screenRectangle.max_y.between(containerRectangle.min_y, containerRectangle.max_y, true)) { | |
| visibleY = true; | |
| }; | |
| if (visibleX && visibleY) { | |
| return true; | |
| } else { | |
| return false; | |
| }; | |
| }; |
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| // isVisibleInWindow.min.js v1.0.1, require between.min.js v1.1.1 | |
| function isVisibleInWindow(a){'string'==typeof a&&(a=$(a).eq(0));let b={x:getScrollX(),y:getScrollY()},c={x:$(window).innerWidth(),y:$(window).innerHeight()},d={max_x:b.x+c.x,min_x:b.x,max_y:b.y+c.y,min_y:b.y},e={x:a.offset().left,y:a.offset().top},f={x:a.innerWidth(),y:a.innerHeight()},g={max_x:e.x+f.x,min_x:e.x,max_y:e.y+f.y,min_y:e.y},h=!1,i=!1;return g.min_x.between(d.min_x,d.max_x,!0)&&(h=!0),g.max_x.between(d.min_x,d.max_x,!0)&&(h=!0),d.min_x.between(g.min_x,g.max_x,!0)&&(h=!0),d.max_x.between(g.min_x,g.max_x,!0)&&(h=!0),g.min_y.between(d.min_y,d.max_y,!0)&&(i=!0),g.max_y.between(d.min_y,d.max_y,!0)&&(i=!0),d.min_y.between(g.min_y,g.max_y,!0)&&(i=!0),(d.max_y.between(g.min_y,g.max_y,!0)&&(i=!0),h&&i)} |
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