javascript 方块移动 js移动div

转载
网络安全战士 2023-06-28 11:32:44
文章标签 javascript 表单移动 Text css 快捷键 文章分类 JavaScript 前端开发
<html>

<head>

<meta http-equiv="Content-Type" content="text/html; charset=gb2312">

 <title>Div拖动/调整大小实例</title>

</head>
<script type="text/javascript">

 //保留的位置

 var saveLeft,saveTop,saveWidth,saveHeight;

 var theBody;

 var eventType;    //事件种类, "move"、"resize"

 var div;

 

 //创建并设定div的参数

 function setDiv()

 {

  //防止重复打开

  if (div)

  {

   return;

  }

  var newLeft,newTop,newWidth,newHeight;

  theBody = document.body;

  

  div = document.createElement("div");

  div.id = "panelDiv";

  div.style.position = "absolute";

  div.style.backgroundColor = "#E5E5E5"

  div.style.padding = "2px 5px 5px 2px";

  div.style.overflow = "hidden";

  div.style.zIndex = 1;

  

  //设定打开的大小和位置

  Function()

  {

   var openType = document.getElementById("radio1").checked ? 0 : 1;

   if (openType == 0)   //默认大小默认位置居中打开

   {

    newWidth = "300px";

    newHeight = "300px";

    newLeft = (theBody.clientWidth - parseInt(newWidth)) / 2 + "px";

    newTop = (theBody.clientHeight - parseInt(newHeight)) / 2 + "px";

   }

   else //存储的位置与大小

   {

    newWidth = saveWidth ? saveWidth : "300px";

    newHeight = saveHeight ? saveHeight : "300px";

    newLeft = saveLeft ? saveLeft : (theBody.clientWidth - parseInt(newWidth)) / 2 + "px";

    newTop = saveTop ? saveTop : (theBody.clientHeight - parseInt(newHeight)) / 2 + "px";

   }

   div.style.width = newWidth;

   div.style.height = newHeight;

   div.style.left = newLeft;

   div.style.top = newTop;

  }

  div = setChild(div);

  theBody.appendChild(div);

  

  var ipt = document.getElementsByTagName("input");

  for(var i = 0; i < ipt.length; i++)

  {

   ipt[i].disabled = true;

  }

 }

 

 function setChild(div)

 {

  //可否移动、调整

  var isMove = document.getElementById("isMove").checked;

  var isResize = document.getElementById("isResize").checked;

  

  //底色

  var cDiv = document.createElement;

  var backDiv = cDiv("div");

  backDiv.style.cssText = "left: 0px; top: 0px; width: 100%; height: 100%; background-color: #F5F5F5;";

  div.appendChild(backDiv);

  

  //标题

  var topDiv = cDiv("div");

  topDiv.style.cssText = "left: 2px; top: 2px; width: 100%; height: 30px; position: absolute; background-color: #78ABFF; vertical-align: middle; z-index: 5";

  if (isMove)

  {

   topDiv.style.cursor = "move";

   topDiv.setAttribute("onmousedown", function(){setMove(this)});

  }

  else

  {

   topDiv.style.cursor = "default";

  }

  topDiv.innerHTML = "<span style='top: 5px; left:5px; font-size: 20px; font-weight: bold; color: #102548; position: relative;' onselectstart='return false'>标题栏</span>";

  div.appendChild(topDiv);

  

  //关闭按钮

  var closeDiv = cDiv("div");

  closeDiv.style.cssText = "right: 8px; top : 5px; width: 24px; height: 24px; position: absolute; background-color: #E4EEFF; border: #2D66C4 1px solid; text-align: center; vertical-align: middle; cursor: pointer; z-index: 10";

  closeDiv.setAttribute("onclick", function() {eCloseDiv()});

  closeDiv.innerHTML = "<span style='font-size: 20px; font-weight: bold; color: #0E377A;' title='Esc快捷键'>×</span>";

  div.appendChild(closeDiv);

  

  //内容

  var contentDiv = cDiv("div");

  contentDiv.style.cssText = "left: 2px; top: 35px; width: 100%; position: absolute; overflow: auto";

  contentDiv.style.height = (parseInt(div.style.height) - 40) + "px";

  contentDiv.innerHTML = "<table style='width: 100%; height: 100%; text-align: center; vertical-align: hidden'><tr><td><p>这里是内容区！</p><a href='javascript:saveDiv()'>保留这个位置和大小</a></td></tr></table>";

  div.appendChild(contentDiv);

  

  //调整大小

  var reDiv = cDiv("div");

  reDiv.style.cssText = "right: 0px; bottom: 0px; width: 5px; height: 5px; position: absolute;";

  if (isResize)

  {

   reDiv.style.cursor = "se-resize";

   reDiv.setAttribute("onmousedown", function(){setResize(this)});

  }

  else

  {

   reDiv.style.cursor = "default";

  }

  div.appendChild(reDiv);

  

  return div;

 }

 

 var oX, oY, oLeft, oTop, oWidth, oHeight; //存储原始移动前的位置

 var divClone, oDiv;   //克隆的节点和原始节点

 var oTime;

 //clone拖移的节点

 function setMove(obj)

 {

  if (event.button == 1)

  {

   if (oTime)

   {

    clearTimeout(oTime);

    divClone.parentNode.removeChild(divClone);

   }

   oDiv = obj.parentNode;

   divClone = oDiv.cloneNode(true);

   divClone.style.filter = "Alpha(opacity=50)";

   divClone.childNodes[1].setAttribute("onmousemove", function(){startMove(this)});

   divClone.childNodes[1].setAttribute("onmouseup", function(){endMove()});

   oX = parseInt(event.clientX);

   oY = parseInt(event.clientY);

   oLeft = parseInt(divClone.style.left);

   oTop = parseInt(divClone.style.top);

   document.body.appendChild(divClone);

   divClone.childNodes[1].setCapture();

   eventType = "move";

  }

 }

 

 //拖移

 function startMove(obj)

 {

  if (eventType == "move" && event.button == 1)

  {

   var moveDiv = obj.parentNode;

   moveDiv.style.left = (oLeft + event.clientX - oX) + "px";

   moveDiv.style.top = (oTop + event.clientY - oY) + "px";

  }

 }

 

 //拖移结束调用动画

 function endMove()

 {

  if (eventType == "move")

  {

   divClone.childNodes[1].releaseCapture();

            move(parseInt(divClone.style.left), parseInt(divClone.style.top));

   eventType = "";

  }

 }

 

 //移动的动画

 function move(aimLeft, aimTop)

 {

  var nowLeft = parseInt(oDiv.style.left);

  var nowTop = parseInt(oDiv.style.top);

  var moveSize = 30;

  if (nowLeft > aimLeft + moveSize || nowLeft < aimLeft - moveSize || nowTop > aimTop + moveSize || nowTop < aimTop - moveSize)

  {

   oDiv.style.left = aimLeft > nowLeft + moveSize ? (nowLeft + moveSize) + "px" : aimLeft < nowLeft - moveSize ? (nowLeft - moveSize) + "px" : nowLeft + "px";

   oDiv.style.top = aimTop > nowTop + moveSize ? (nowTop + moveSize) + "px" : aimTop < nowTop - moveSize ? (nowTop - moveSize) + "px" : nowTop + "px";

   oTime = setTimeout("move(" + aimLeft + ", " + aimTop + ")", 1);

  }

  else

  {

   oDiv.style.left = divClone.style.left;

   oDiv.style.top = divClone.style.top;

   divClone.parentNode.removeChild(divClone);

   divClone == null;

  }

 }

 

 //clone调整大小的节点

 function setResize(obj)

 {

  if (event.button == 1)

  {

   if (oTime)

   {

    clearTimeout(oTime);

    divClone.parentNode.removeChild(divClone);

   }

   oDiv = obj.parentNode;

   divClone = oDiv.cloneNode(true);

   divClone.style.filter = "Alpha(opacity=50)";

   divClone.childNodes[4].setAttribute("onmousemove", function(){startResize(this)});

   divClone.childNodes[4].setAttribute("onmouseup", function(){endResize()});

   oX = parseInt(event.clientX);

   oY = parseInt(event.clientY);

   oWidth = parseInt(divClone.style.width);

   oHeight = parseInt(divClone.style.height);

   document.body.appendChild(divClone);

   divClone.childNodes[4].setCapture();

   eventType = "resize";

  }

 }

 

 //拖动调整大小

 function startResize(obj)

 {

  if (eventType == "resize" && event.button == 1)

  {

   var nX = event.clientX;

   var nY = event.clientY;

   if (nX > oX - oWidth && nY > oY - oHeight + 40)

   {

    var resizeDiv = obj.parentNode;

    resizeDiv.style.width = (oWidth + event.clientX - oX) + "px";

    resizeDiv.style.height = (oHeight + event.clientY - oY) + "px";

    resizeDiv.childNodes[3].style.height = (parseInt(resizeDiv.style.height) - 40) + "px";

   }

  }

 }

 

 //调整大小结束

 function endResize()

 {

  if (eventType == "resize")

  {

   divClone.childNodes[4].releaseCapture();

            resize(parseInt(divClone.style.width), parseInt(divClone.style.height));

   eventType = "";

  }

 }

 

 //调整大小的动画

 function resize(aimWidth, aimHeight)

 {

  var nowWidth = parseInt(oDiv.style.width);

  var nowHeight = parseInt(oDiv.style.height);

  var resizeSize = 30;

  if (nowWidth > aimWidth + resizeSize || nowWidth < aimWidth - resizeSize || nowHeight > aimHeight + resizeSize || nowHeight < aimHeight - resizeSize)

  {

   oDiv.style.width = aimWidth > nowWidth + resizeSize ? (nowWidth + resizeSize) + "px" : aimWidth < nowWidth - resizeSize ? (nowWidth - resizeSize) + "px" : nowWidth + "px";

   oDiv.style.height = aimHeight > nowHeight + resizeSize ? (nowHeight + resizeSize) + "px" : aimHeight < nowHeight - resizeSize ? (nowHeight - resizeSize) + "px" : nowHeight + "px";

   oDiv.childNodes[3].style.height = (parseInt(oDiv.style.height) - 40) + "px";

   oTime = setTimeout("resize(" + aimWidth + ", " + aimHeight + ")", 1);

  }

  else

  {

   oDiv.style.width = divClone.style.width;

   oDiv.style.height = divClone.style.height;

   oDiv.childNodes[3].style.height = (parseInt(oDiv.style.height) - 40) + "px";

   divClone.parentNode.removeChild(divClone);

   divClone == null;

  }

 }

 

 //关闭DIV

 function eCloseDiv()

 {

  if (div)

  {

   div.parentNode.removeChild(div);

   var ipt = document.getElementsByTagName("input");

   for(var i = 0; i < ipt.length; i++)

   {

    ipt[i].disabled = false;

   }

   div = null;

  }

 }

 

 //保留位置和大小

 function saveDiv()

 {

  if (div)

  {

   saveLeft = div.style.left;

   saveTop = div.style.top;

   saveWidth = div.style.width;

   saveHeight = div.style.height;

   alert("保留成功！");

  }

 }

 

 //快捷键

 document.onkeydown = function()

 {

  event.keyCode == 27 ? eCloseDiv() : null;  //Esc快捷键

  event.ctrlKey && (event.keyCode == 83 || event.keyCode == 115) ? saveDiv() : null; //ctrl+s保存位置

  event.ctrlKey && event.keyCode == 13 ? setDiv() : null //ctrl+enter打开Div

  !event.ctrlKey && (event.keyCode == 37 || event.keyCode == 38 || event.keyCode == 39 || event.keyCode == 40) ? arrowMove(event.keyCode) : null;

  event.ctrlKey && (event.keyCode == 37  || event.keyCode == 38 || event.keyCode == 39 || event.keyCode == 40) ? arrowResize(event.keyCode) : null;

 }

 

 //上下左右箭头移动div

 function arrowMove(eKeyCode)

 {

  if (div)

  {

   var isMove = document.getElementById("isMove").checked;

   if (isMove)

   {

    switch(eKeyCode)

    {

     case 37:

      div.style.left = (parseInt(div.style.left) - 1) + "px"; //left

      break

     case 38:

      div.style.top = (parseInt(div.style.top) - 1) + "px"; //up

      break

     case 39:

      div.style.left = (parseInt(div.style.left) + 1) + "px"; //right

      break

     case 40:

      div.style.top = (parseInt(div.style.top) + 1) + "px"; //down

      break

    }

   }

  }

 }

 

 //ctrl+上下左右箭头调整div大小

 function arrowResize(eKeyCode)

 {

  if (div)

  {

   var isResize = document.getElementById("isResize").checked;

   if (isResize)

   {

    switch(eKeyCode)

    {

     case 37:

      div.style.width = (parseInt(div.style.width) - 1) + "px"; //left

      break

     case 38:

      div.style.height = (parseInt(div.style.height) - 1) + "px"; //up

      break

     case 39:

      div.style.width = (parseInt(div.style.width) + 1) + "px"; //right

      break

     case 40:

      div.style.height = (parseInt(div.style.height) + 1) + "px"; //down

      break

    }

   }

  }

 }

</script>
<body>

<p>

 <input type="checkbox" id="isMove" /><label for="isMove">可移动</label>   

 <input type="checkbox" id="isResize" /><label for="isResize">可调整大小</label>   

</p>

  

<p>

 <input type="radio" name="radio" id="radio1" checked /><label for="radio1">默认居中打开</label>   

 <input type="radio" name="radio" id="radio2" /><label for="radio2">保留位置上打开</label>

</p>

<p><a href="javascript:setDiv()">打开DIV</a></p>

<p style="font-weight: bold">操作说明：</p>

<ol>

 <li>

  选中复选框（可移动、可调整大小）后，打开的DIV具有移动/调整大小的功能(此时移动/调整大小快捷键可使用);<br>

  反之，不可移动/调整大小(此时移动/调整大小快捷键无效)

 </li>

 <li>

  单选框默认居中打开选中，无论有无保存DIV位置和大小均以默认位置及大小打开DIV

 </li>

 <li>

  单选框保留位置上打开选中，如果未发现保存记录以默认方式打开，否则以保存的位置及大小打开

 </li>

 <li>

  如果选中可移动后，鼠标经过标题位置（蓝色背景）处会变成移动的图标，此时按住鼠标左键会产生一个半透明的DIV，按住鼠标不动拉动此半透明DIV会跟随移动，释放鼠标左键后会产生一段原始位置移动至半透明位置的动画，当动画重叠时，半透明的DIV将回收。

 </li>

 <li>

  如果选中可调整大小后，鼠标经过整个DIV的最右下角处会变成伸缩的图标，此时按住鼠标左键会产生一个半透明的DIV，按住鼠标不动拉动此半透明DIV会随着移动而调整大小，释放鼠标左键后会产生一段原始大小伸缩至半透明大小的动画，当动画重叠时，半透明的DIV将回收。

 </li>

 <li>

  DIV的右上角有关闭按钮，按下后DIV将remove

 </li>

</ol> 

<p style="font-weight: bold">

 快捷键说明：

<ol>

 <li>

  Ctrl + Enter : 打开div

 </li>

 <li>

  Ctrl + s(大小写均可) : 保存div的大小和位置

 </li>

 <li>

  上下左右箭头 : 轻移div位置

 </li>

 <li>

  Ctrl + 上下左右箭头 : 轻调div大小

 </li>

 <li>

  Esc : 关闭Div

 </li>

</ol> 

</p>

</body>

</html>
本文章为转载内容，我们尊重原作者对文章享有的著作权。如有内容错误或侵权问题，欢迎原作者联系我们进行内容更正或删除文章。