圖片或文字按軌跡移動效果

2024-09-05 12:18:29

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這是一個內核為javaScript的圖片或文字按軌跡移動效果，請點擊按鈕激活功能！按住鼠標左鍵，在頁面劃動，人物將按照鼠標軌跡移動。

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8" /><title>移動效果（按軌跡移動）</title><style type="text/css"> body,div{margin:0;padding:0;}div{position:absolute;width:66px;height:45px;background:url(/jscss/demoimg/201211/1.gif) no-repeat;top:100px;left:50px;}p,input{margin:10px;}</style><script type="text/javascript"> window.onload = function (){	var oDiv = document.getElementsByTagName("div")[0];	var aInput = document.getElementsByTagName("input");	var oP = document.getElementsByTagName("p")[0];	var i = 0;		aInput[0].onclick = function (event)	{				(event || window.event).cancelBubble = true;		clearEvent();		this.value += "(已激活)";		oP.innerHTML = "鼠標點擊頁面， 人物將移動至鼠標位置！";		document.onclick = function (event)		{			var event = event || window.event;			oDiv.style.background = "url(img/2.gif) no-repeat";			startMove(oDiv, {x:event.clientX, y:event.clientY}, function(){oDiv.style.background = "url(img/1.gif) no-repeat"});			return false;		}		};		aInput[1].onclick = function (event)	{				(event || window.event).cancelBubble = true;		clearEvent();		this.value += "(已激活)";		oP.innerHTML = "按住鼠標左鍵，在頁面劃動，人物將按照鼠標軌跡移動。"		var aPos = [{x:oDiv.offsetLeft, y:oDiv.offsetTop}];		document.onmousedown = function (event)		{			var event = event || window.event;						aPos.push({x:event.clientX, y:event.clientY});			document.onmousemove = function (event)			{				var event = event || window.event;				aPos.push({x:event.clientX, y:event.clientY});					return false;			}			return false;		}		document.onmouseup = function ()		{			document.onmousemove = null;			oDiv.style.background = "url(img/2.gif) no-repeat";					var timer = setInterval(function ()			{				if(aPos.length == 0)				{					clearInterval(timer);					oDiv.style.background = "url(img/1.gif) no-repeat";					return;					};				oDiv.style.left = aPos[0].x + "px";				oDiv.style.top = aPos[0].y + "px";				aPos.shift();			}, 30);		};	}		function clearEvent()	{		document.onclick = null;		document.onmousedown = null;		document.onmousemove = null;		document.onmouseup = null;		for (i = 0; i < aInput.length; i++)		{			aInput[i].value = aInput[i].value.replace("(已激活)", "");			aInput[i].onmousedown = aInput[i].onmouseup = function (event)			{				(event || window.event).cancelBubble = true;				};		}	}};function startMove(obj, oTarget, fnEnd){	clearInterval(obj.timer);	obj.timer = setInterval(function ()	{		doMove(obj, oTarget, fnEnd)		}, 30)	}function doMove(obj, oTarget, fnEnd){	var iX = (oTarget.x - obj.offsetLeft) / 5;	var iY = (oTarget.y - obj.offsetTop) / 5;	iX = iX > 0 ? Math.ceil(iX) : Math.floor(iX);	iY = iY > 0 ? Math.ceil(iY) : Math.floor(iY);	if (oTarget.x == obj.offsetLeft && oTarget.y == obj.offsetTop)	{		clearInterval(obj.timer);		fnEnd && fnEnd();		}	else	{		obj.style.left = obj.offsetLeft + iX + "px";		obj.style.top = obj.offsetTop + iY + "px";		}}</script></head><body><input type="button" value="根據鼠標點擊位置移動" /><input type="button" value="根據標鼠標軌跡移動" /><p>請點擊按鈕激活功能！</p><div></div></body></html>

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