本文實例講述了JavaScript控制網頁平滑滾動到指定元素位置的方法。分享給大家供大家參考。具體如下:
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); }
使用方法:
ScrollToControl('elementID');
頁面將會平滑的捲動到元素elementID所在的位置
希望本文所述對大家的javascript程式設計有所幫助。