Home >Web Front-end >JS Tutorial >JavaScript method to control smooth scrolling of web pages to the position of specified elements_javascript skills
The example in this article describes how JavaScript controls the smooth scrolling of a web page to the position of a specified element. Share it with everyone for your reference. The details are as follows:
function elementPosition(obj) { var curleft = 0, curtop = 0; if (obj.offsetParent) { curleft = obj.offsetLeft; curtop = obj.offsetTop; while (obj = obj.offsetParent) { curleft += obj.offsetLeft; curtop += obj.offsetTop; } } return { x: curleft, y: curtop }; } function ScrollToControl(id) { var elem = document.getElementById(id); var scrollPos = elementPosition(elem).y; scrollPos = scrollPos - document.documentElement.scrollTop; var remainder = scrollPos % 50; var repeatTimes = (scrollPos - remainder) / 50; ScrollSmoothly(scrollPos,repeatTimes); window.scrollBy(0,remainder); } var repeatCount = 0; var cTimeout; var timeoutIntervals = new Array(); var timeoutIntervalSpeed; function ScrollSmoothly(scrollPos,repeatTimes) { if(repeatCount < repeatTimes) { window.scrollBy(0,50); } else { repeatCount = 0; clearTimeout(cTimeout); return; } repeatCount++; cTimeout = setTimeout("ScrollSmoothly('"+scrollPos+"','"+repeatTimes+"')",10); }
How to use:
ScrollToControl('elementID');
The page will scroll smoothly to the location of the element elementID
I hope this article will be helpful to everyone’s JavaScript programming design.