JavaScript module drag sample code at will_javascript skills-JS Tutorial-php.cn

Copy code The code is as follows: JavaScript模块随意拖动 html{ width:100%; overflow-x:hidden; } body{ font-family: Trebuchet MS, Lucida Sans Unicode, Arial, sans-serif; width:100%; margin:0px; padding:0px; text-align:center; background-color:#E2EBED; font-size:0.7em; overflow-x:hidden; }

#mainContainer{ width:600px; margin:0 auto; text-align:left; background-color:#FFF; } h4{ margin:0px; } p{ margin-top:5px; } #dragableElementsParentBox{ padding:10px; }

.smallArticle,.bigArticle{ float:left; border:1px solid #000; background-color:#DDD; padding:2px; margin-right:10px; margin-bottom:5px; } .smallArticle img,.bigArticle img{ float:left; padding:5px; } .smallArticle .rightImage,.bigArticle .rightImage{ float:right; } .smallArticle{ width:274px; } .bigArticle{ width:564px; } .clear{ clear:both; }

#rectangle{ float:left; border:1px dotted #F00; background-color:#FFF; } #insertionMarker{ width:6px; position:absolute; display:none; } #insertionMarker img{ float:left; } #dragDropMoveLayer{ position:absolute; display:none; border:1px solid #000; filter:alpha(opacity=50); opacity:0.5; }

var rectangleBorderWidth = 2; var useRectangle = false; var autoScrollSpeed = 4; function saveData() { var saveString = ""; for(var no=0;no if(saveString.length>0)saveString = saveString ';'; ref = dragableObjectArray[no]; saveString = saveString ref['obj'].id; }

alert(saveString); } var dragableElementsParentBox; var opera = navigator.appVersion.indexOf('Opera')>=0?true:false; var rectangleDiv = false; var insertionMarkerDiv = false; var mouse_x; var mouse_y;

var el_x; var el_y; var dragDropTimer = -1; var dragObject = false; var dragObjectNextObj = false; var dragableObjectArray = new Array(); var destinationObj = false; var currentDest = false; var allowRectangleMove = true; var insertionMarkerLine; var dragDropMoveLayer; var autoScrollActive = false; var documentHeight = false; var documentScrollHeight = false; var dragableAreaWidth = false; function getTopPos(inputObj) { var returnValue = inputObj.offsetTop; while((inputObj = inputObj.offsetParent) != null){ if(inputObj.tagName!='HTML')returnValue = inputObj.offsetTop; } return returnValue; }

function getLeftPos(inputObj) { var returnValue = inputObj.offsetLeft; while((inputObj = inputObj.offsetParent) != null){ if(inputObj.tagName!='HTML')returnValue = inputObj.offsetLeft; } return returnValue; }

function cancelSelectionEvent() { if(dragDropTimer>=0)return false; return true; }

function getObjectFromPosition(x,y) { var height = dragObject.offsetHeight; var width = dragObject.offsetWidth; var indexCurrentDragObject=-5; for(var no=0;no ref = dragableObjectArray[no]; if(ref['obj']==dragObject)indexCurrentDragObject=no; if(no if(ref['obj']==dragObject && useRectangle)continue; if(x > ref['left'] && y>ref['top'] && x if(!useRectangle && dragableObjectArray[no]['obj']==dragObject)return 'self'; if(indexCurrentDragObject==(no-1))return 'self'; return Array(dragableObjectArray[no],no); }

if(x > (ref['left'] (ref['width']/2)) && y>ref['top'] && x if(no if(no==indexCurrentDragObject || (no==indexCurrentDragObject-1)){ return 'self'; } if(dragableObjectArray[no]['obj']!=dragObject){ return Array(dragableObjectArray[no 1],no 1); }else{ if(!useRectangle)return 'self'; if(no } }else{ if(dragableObjectArray[dragableObjectArray.length-1]['obj']!=dragObject)return 'append';

} } if(no if(x > (ref['left'] ref['width']) && y>ref['top'] && y return Array(dragableObjectArray[no 1],no 1); } } } if(x>ref['left'] && y>(ref['top'] ref['height']))return 'append'; return false; }

function initDragTimer() { if(dragDropTimer>=0 && dragDropTimer dragDropTimer ; setTimeout('initDragTimer()',5); return; } if(dragDropTimer==10){

if(useRectangle){ dragObject.style.opacity = 0.5; dragObject.style.filter = 'alpha(opacity=50)'; dragObject.style.cursor = 'default'; }else{ var newObject = dragObject.cloneNode(true); dragDropMoveLayer.appendChild(newObject); } } }

mouse_y = mouse_y - direction; if(useRectangle){ dragObject.style.top = (el_y - mouse_y yPos) 'px'; }else{ dragDropMoveLayer.style.top = (el_y - mouse_y yPos) 'px'; } }else{ autoScrollActive = false; } } if(autoScrollActive)setTimeout('autoScroll(' direction ',' yPos ')',5); }

function moveDragableElement(e) { if(document.all)e = event;

if(dragDropTimer if(!allowRectangleMove)return false;

if(e.clientY (documentHeight-50)){ if(e.clientY autoScrollActive = true; autoScroll((autoScrollSpeed*-1),e.clientY); }

if(e.clientY>(documentHeight-50) && document.documentElement.scrollHeight autoScrollActive = true; autoScroll(autoScrollSpeed,e.clientY); } }else{ autoScrollActive = false; } if(useRectangle){ if(dragObject.style.position!='absolute'){ dragObject.style.position = 'absolute'; setTimeout('repositionDragObjectArray()',50); } }

if(useRectangle){ rectangleDiv.style.display='block'; }else{ insertionMarkerDiv.style.display='block'; dragDropMoveLayer.style.display='block'; }

if(useRectangle){ dragObject.style.left = (el_x - mouse_x e.clientX Math.max(document.body.scrollLeft,document.documentElement.scrollLeft)) 'px'; dragObject.style.top = (el_y - mouse_y e.clientY) 'px'; }else{ dragDropMoveLayer.style.left = (el_x - mouse_x e.clientX Math.max(document.body.scrollLeft,document.documentElement.scrollLeft)) 'px'; dragDropMoveLayer.style.top = (el_y - mouse_y e.clientY) 'px'; } dest = getObjectFromPosition(e.clientX Math.max(document.body.scrollLeft,document.documentElement.scrollLeft),e.clientY Math.max(document.body.scrollTop,document.documentElement.scrollTop));

if(dest!==false && dest!='append' && dest!='self'){ destinationObj = dest[0];

if(currentDest!==destinationObj){ currentDest = destinationObj; if(useRectangle){ destinationObj['obj'].parentNode.insertBefore(rectangleDiv,destinationObj['obj']); repositionDragObjectArray(); }else{ if(dest[1]>0 && (dragableObjectArray[dest[1]-1]['obj'].offsetLeft dragableObjectArray[dest[1]-1]['width'] dragObject.offsetWidth) insertionMarkerDiv.style.left = (getLeftPos(dragableObjectArray[dest[1]-1]['obj']) dragableObjectArray[dest[1]-1]['width'] 2) 'px'; insertionMarkerDiv.style.top = (getTopPos(dragableObjectArray[dest[1]-1]['obj']) - 2) 'px'; insertionMarkerLine.style.height = dragableObjectArray[dest[1]-1]['height'] 'px'; }else{ insertionMarkerDiv.style.left = (getLeftPos(destinationObj['obj']) - 8) 'px'; insertionMarkerDiv.style.top = (getTopPos(destinationObj['obj']) - 2) 'px'; insertionMarkerLine.style.height = destinationObj['height'] 'px'; }

} } }

if(dest=='self' || !dest){ insertionMarkerDiv.style.display='none'; destinationObj = dest; }

if(dest=='append'){ if(useRectangle){ dragableElementsParentBox.appendChild(rectangleDiv); dragableElementsParentBox.appendChild(document.getElementById('clear')); }else{ var tmpRef = dragableObjectArray[dragableObjectArray.length-1]; insertionMarkerDiv.style.left = (getLeftPos(tmpRef['obj']) 2) tmpRef['width'] 'px'; insertionMarkerDiv.style.top = (getTopPos(tmpRef['obj']) - 2) 'px'; insertionMarkerLine.style.height = tmpRef['height'] 'px'; } destinationObj = dest; repositionDragObjectArray(); }

if(useRectangle && !dest){ destinationObj = currentDest; }

allowRectangleMove = false; setTimeout('allowRectangleMove=true',50); }

function stop_dragDropElement() { dragDropTimer = -1;

if(destinationObj && destinationObj!='append' && destinationObj!='self'){ destinationObj['obj'].parentNode.insertBefore(dragObject,destinationObj['obj']); } if(destinationObj=='append'){ dragableElementsParentBox.appendChild(dragObject); dragableElementsParentBox.appendChild(document.getElementById('clear')); }

if(dragObject && useRectangle){ dragObject.style.opacity = 1; dragObject.style.filter = 'alpha(opacity=100)'; dragObject.style.cursor = 'move'; dragObject.style.position='static'; } rectangleDiv.style.display='none'; insertionMarkerDiv.style.display='none'; dragObject = false; currentDest = false; resetObjectArray(); destinationObj = false; if(dragDropMoveLayer){ dragDropMoveLayer.style.display='none'; dragDropMoveLayer.innerHTML=''; } autoScrollActive = false; documentScrollHeight = document.documentElement.scrollHeight 100; }

function cancelEvent() { return false; }

function repositionDragObjectArray() { for(var no=0;no ref = dragableObjectArray[no]; ref['left'] = getLeftPos(ref['obj']); ref['top'] = getTopPos(ref['obj']); } documentScrollHeight = document.documentElement.scrollHeight 100; documentHeight = document.documentElement.clientHeight; }

function resetObjectArray() { dragableObjectArray.length=0; var subDivs = dragableElementsParentBox.getElementsByTagName('*'); var countEl = 0;

for(var no=0;no var attr = subDivs[no].getAttribute('dragableBox'); if(opera)attr = subDivs[no].dragableBox; if(attr=='true'){ var index = dragableObjectArray.length; dragableObjectArray[index] = new Array(); ref = dragableObjectArray[index]; ref['obj'] = subDivs[no]; ref['width'] = subDivs[no].offsetWidth; ref['height'] = subDivs[no].offsetHeight; ref['left'] = getLeftPos(subDivs[no]); ref['top'] = getTopPos(subDivs[no]); ref['index'] = countEl; countEl ; } } }

function initdragableElements() { dragableElementsParentBox = document.getElementById('dragableElementsParentBox'); insertionMarkerDiv = document.getElementById('insertionMarker'); insertionMarkerLine = document.getElementById('insertionMarkerLine'); dragableAreaWidth = dragableElementsParentBox.offsetWidth; if(!useRectangle){ dragDropMoveLayer = document.createElement('DIV'); dragDropMoveLayer.id = 'dragDropMoveLayer'; document.body.appendChild(dragDropMoveLayer); }

var subDivs = dragableElementsParentBox.getElementsByTagName('*'); var countEl = 0; for(var no=0;no var attr = subDivs[no].getAttribute('dragableBox'); if(opera)attr = subDivs[no].dragableBox; if(attr=='true'){ subDivs[no].style.cursor='move'; subDivs[no].onmousedown = initDrag; var index = dragableObjectArray.length; dragableObjectArray[index] = new Array(); ref = dragableObjectArray[index]; ref['obj'] = subDivs[no]; ref['width'] = subDivs[no].offsetWidth; ref['height'] = subDivs[no].offsetHeight; ref['left'] = getLeftPos(subDivs[no]); ref['top'] = getTopPos(subDivs[no]); ref['index'] = countEl; countEl++; } } rectangleDiv = document.createElement('DIV'); rectangleDiv.id='rectangle'; rectangleDiv.style.display='none'; dragableElementsParentBox.appendChild(rectangleDiv); document.body.onmousemove = moveDragableElement; document.body.onmouseup = stop_dragDropElement; document.body.onselectstart = cancelSelectionEvent; document.body.ondragstart = cancelEvent; window.onresize = repositionDragObjectArray; documentHeight = document.documentElement.clientHeight; }

window.onload = initdragableElements;

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Heading 2 Splendida porro oculi fugitant vitantque tueri. sol etiam caecat, contra si tendere pergas,propterea quia vis magnast.

Heading 3 Splendida porro oculi fugitant vitantque tueri. sol etiam caecat, contra si tendere pergas,propterea quia vis magnast.

Heading 4 Splendida porro oculi fugitant vitantque tueri. sol etiam caecat, contra si tendere pergas,propterea quia vis magnast ipsius et altea?ra per purum simulacra ferunturet feriunt oculos turbantia composituras.

Heading 5 Splendida porro oculi fugitant vitantque tueri. sol etiam caecat, contra si tendere pergas,propterea quia vis magnast.

Heading 6 Splendida porro oculi fugitant vitantque tueri. sol etiam caecat, contra si tendere pergas,propterea quia vis magnast.

Heading 7 Splendida porro oculi fugitant vitantque tueri. sol etiam caecat, contra si tendere pergas,propterea quia vis magnast ipsius et altea?ra per purum simulacra ferunturet feriunt oculos turbantia composituras.

Heading 8 Splendida porro oculi fugitant vitantque tueri. sol etiam caecat, contra si tendere pergas,propterea quia vis magnast ipsius et altea?ra per purum simulacra ferunturet feriunt oculos turbantia composituras.

Heading 9 Splendida porro oculi fugitant vitantque tueri. sol etiam caecat, contra si tendere pergas,propterea quia vis magnast ipsius et altea?ra per purum simulacra ferunturet feriunt oculos turbantia composituras.