Question

高分求JS代码

我想利用层实现窗口关闭、拖动功能，如下是JS文件的一部分：
var resDiv=document.createElement("div");//创建一个div对象
resDiv.style.backgroundColor="white";
......
var content=‘<div id="cont">......</div>’
resDiv.innerHTML=content;

问题是：content里面怎么写，由它生成的层resDiv可以实现关闭、拖动功能,
望高手不吝相助，谢谢~~

Answer 1

下面是一个提示信息窗口层代码!能实现关闭和拖动功能!你自己研究一下吧!

function dialog(){
var titile = '';
var width = 300;
var height = 180;
var src = "";
var path = "images/dialog/";
var sFunc = '<input id="dialogOk" type="button" style="{width:62px;height:22px;border:0;background:url(\'images/dialog/smb_btn_bg.gif\');line-height:20px;" value="确认" onclick="new dialog().reset();" /> <input id="dialogCancel" type="button" style="{width:62px;height:22px;border:0;background:url(\'images/dialog/smb_btn_bg.gif\');line-height:20px;" value="取消" onclick="new dialog().reset();" />';
var sClose = '<input type="image" id="dialogBoxClose" onclick="new dialog().reset();" src="' + path + 'dialogCloseF.gif" border="0" width="17" height="17" onmouseover="this.src=\'' + path + 'dialogClose0.gif\';" onmouseout="this.src=\'' + path + 'dialogCloseF.gif\';" align="absmiddle" />';
var sBody = '\
<table id="dialogBodyBox" border="0" align="center" cellpadding="0" cellspacing="0">\
<tr height="10"><td colspan="4"></td></tr>\
<tr>\
<td width="10"></td>\
<td width="80" align="center" valign="absmiddle"><img id="dialogBoxFace" src="' + path + '3.gif" /></td>\
<td id="dialogMsg" style="font-size:12px;"></td>\
<td width="10"></td>\
</tr>\
<tr height="10"><td colspan="4" align="center"></td></tr>\
<tr><td id="dialogFunc" colspan="4" align="center">' + sFunc + '</td></tr>\
<tr height="10"><td colspan="4" align="center"></td></tr>\
</table>\
';
var sBox = '\
<table id="dialogBox" width="' + width + '" border="0" cellpadding="0" cellspacing="0" style="border:1px solid #000;display:none;z-index:10;">\
<tr height="1" bgcolor="#D6E3EB"><td></td></tr>\
<tr height="25" bgcolor="FFCC00">\
<td>\
<table onselectstart="return false;" style="-moz-user-select:none;" width="100%" border="0" cellpadding="0" cellspacing="0">\
<tr>\
<td width="6"></td>\
<td id="dialogBoxTitle" onmousedown="new dialog().moveStart(event, \'dialogBox\')" style="color:#fff;cursor:move;font-size:12px;font-weight:bold;"> </td>\
<td id="dialogClose" width="27" align="right" valign="middle">\
' + sClose + '\
</td>\
<td width="6"></td>\
</tr>\
</table>\
</td>\
</tr>\
<tr height="2" bgcolor="#EDEDED"><td></td></tr>\
<tr id="dialogHeight" style="height:' + height + '">\
<td id="dialogBody" bgcolor="#ffffff">' + sBody + '</td>\
</tr>\
</table>\
<div id="dialogBoxShadow" style="display:none;z-index:9;"></div>\
';
var sBG = '\
<div id="dialogBoxBG" style="position:absolute;top:0px;left:0px;width:100%;height:100%;background:url(images/dialog/blank.gif);"></div>\
';
function $(_sId){return document.getElementById(_sId)}
this.show = function(){
this.middle('dialogBox');
this.shadow();
//$("dialogBoxBG").style.width = document.body.scrollWidth;
//$("dialogBoxBG").style.height = document.body.scrollHeight;
}
this.reset = function(){$('dialogBox').style.display='none';$('dialogBoxBG').style.display='none';$('dialogBoxShadow').style.display = "none";$('dialogBody').innerHTML = sBody;}
this.html = function(_sHtml){$("dialogBody").innerHTML = _sHtml;this.show();}
this.init = function(){
$('dialogCase') ? $('dialogCase').parentNode.removeChild($('dialogCase')) : function(){};
var oDiv = document.createElement('span');
oDiv.id = "dialogCase";
oDiv.innerHTML = sBG + sBox;
document.body.appendChild(oDiv);
$('dialogBoxBG').style.height = document.body.scrollHeight;
}
this.button = function(_sId, _sFuc){
if($(_sId)){
$(_sId).style.display = '';
if($(_sId).addEventListener){
if($(_sId).act){$(_sId).removeEventListener('click', function(){eval($(_sId).act)}, false);}
$(_sId).act = _sFuc;
$(_sId).addEventListener('click', function(){eval(_sFuc)}, false);
}else{
if($(_sId).act){$(_sId).detachEvent('onclick', function(){eval($(_sId).act)});}
$(_sId).act = _sFuc;
$(_sId).attachEvent('onclick', function(){eval(_sFuc)});
}
}
}
this.shadow = function(){
var oShadow = $('dialogBoxShadow');
var oDialog = $('dialogBox');
oShadow['style']['position'] = "absolute";
oShadow['style']['background'] = "#000";
oShadow['style']['display'] = "";
oShadow['style']['opacity'] = "0.2";
oShadow['style']['filter'] = "alpha(opacity=20)";
oShadow['style']['top'] = oDialog.offsetTop + 6;
oShadow['style']['left'] = oDialog.offsetLeft + 6;
oShadow['style']['width'] = oDialog.offsetWidth;
oShadow['style']['height'] = oDialog.offsetHeight;
}
this.open = function(_sUrl, _sMode){
this.show();
if(!_sMode || _sMode == "no" || _sMode == "yes"){
$("dialogBody").innerHTML = "<iframe width='100%' height='100%' src='" + _sUrl + "' frameborder='0' scrolling='" + _sMode + "'></iframe>";
}
}
this.showWindow = function(_sUrl, _iWidth, _iHeight, _sMode, _sTitle){
var oWindow;
var sLeft = (screen.width) ? (screen.width - _iWidth)/2 : 0;
var iTop = -80 + (screen.height - _iHeight)/2;
iTop = iTop > 0 ? iTop : (screen.height - _iHeight)/2;
var sTop = (screen.height) ? iTop : 0;
if(window.showModalDialog && _sMode == "m"){
oWindow = window.showModalDialog(_sUrl,_sTitle,"dialogWidth:" + _iWidth + "px;dialogheight:" + _iHeight + "px");
} else {
oWindow = window.open(_sUrl, _sTitle, 'height=' + _iHeight + ', width=' + _iWidth + ', top=' + sTop + ', left=' + sLeft + ', toolbar=no, menubar=no, scrollbars=' + _sMode + ', resizable=no,location=no, status=no');
this.reset();
}
}
this.event = function(_sMsg, _sOk, _sCancel, _sClose){
$('dialogFunc').innerHTML = sFunc;
$('dialogClose').innerHTML = sClose;
$('dialogBodyBox') == null ? $('dialogBody').innerHTML = sBody : function(){};
$('dialogMsg') ? $('dialogMsg').innerHTML = _sMsg : function(){};
_sOk && _sOk != "" ? this.button('dialogOk', _sOk)| $('dialogOk').focus() : $('dialogOk').style.display = 'none';
_sCancel && _sCancel != "" ? this.button('dialogCancel', _sCancel) : $('dialogCancel').style.display = 'none';
//_sOk ? this.button('dialogOk', _sOk) : _sOk == "" ? function(){} : $('dialogCancel').style.display = 'none';
//_sCancel ? this.button('dialogCancel', _sCancel) : _sCancel == "" ? function(){} : $('dialogCancel').style.display = 'none';
_sClose ? this.button('dialogBoxClose', _sClose) : function(){};
this.show();
}
this.set = function(_oAttr, _sVal){
var oShadow = $('dialogBoxShadow');
var oDialog = $('dialogBox');
var oHeight = $('dialogHeight');

if(_sVal != ''){
switch(_oAttr){
case 'title':
$('dialogBoxTitle').innerHTML = _sVal;
title = _sVal;
break;
case 'width':
oDialog['style']['width'] = _sVal;
width = _sVal;
break;
case 'height':
oHeight['style']['height'] = _sVal;
height = _sVal;
break;
case 'src':
if(parseInt(_sVal) > 0){
$('dialogBoxFace') ? $('dialogBoxFace').src = path + _sVal + '.gif' : function(){};
}else{
$('dialogBoxFace') ? $('dialogBoxFace').src = _sVal : function(){};
}
src = _sVal;
break;
}
}
this.middle('dialogBox');
oShadow['style']['top'] = oDialog.offsetTop + 6;
oShadow['style']['left'] = oDialog.offsetLeft + 6;
oShadow['style']['width'] = oDialog.offsetWidth;
oShadow['style']['height'] = oDialog.offsetHeight;
}
this.moveStart = function (event, _sId){
var oObj = $(_sId);
oObj.onmousemove = mousemove;
oObj.onmouseup = mouseup;
oObj.setCapture ? oObj.setCapture() : function(){};
oEvent = window.event ? window.event : event;
var dragData = {x : oEvent.clientX, y : oEvent.clientY};
var backData = {x : parseInt(oObj.style.top), y : parseInt(oObj.style.left)};
function mousemove(){
var oEvent = window.event ? window.event : event;
var iLeft = oEvent.clientX - dragData["x"] + parseInt(oObj.style.left);
var iTop = oEvent.clientY - dragData["y"] + parseInt(oObj.style.top);
oObj.style.left = iLeft;
oObj.style.top = iTop;
$('dialogBoxShadow').style.left = iLeft + 6;
$('dialogBoxShadow').style.top = iTop + 6;
dragData = {x: oEvent.clientX, y: oEvent.clientY};

}
function mouseup(){
var oEvent = window.event ? window.event : event;
oObj.onmousemove = null;
oObj.onmouseup = null;
if(oEvent.clientX < 1 || oEvent.clientY < 1 || oEvent.clientX > document.body.clientWidth || oEvent.clientY > document.body.clientHeight){
oObj.style.left = backData.y;
oObj.style.top = backData.x;
$('dialogBoxShadow').style.left = backData.y + 6;
$('dialogBoxShadow').style.top = backData.x + 6;
}
oObj.releaseCapture ? oObj.releaseCapture() : function(){};
}
}
this.hideModule = function(_sType, _sDisplay){
var aIframe = parent.document.getElementsByTagName("iframe");aIframe=0;
var aType = document.getElementsByTagName(_sType);
var iChildObj, iChildLen;
for (var i = 0; i < aType.length; i++){
aType[i].style.display = _sDisplay;
}
for (var j = 0; j < aIframe.length; j++){
iChildObj = document.frames ? document.frames[j] : aIframe[j].contentWindow;
iChildLen = iChildObj.document.body.getElementsByTagName(_sType).length;
for (var k = 0; k < iChildLen; k++){
iChildObj.document.body.getElementsByTagName(_sType)[k].style.display = _sDisplay;
}
}
}
this.middle = function(_sId){
var sClientWidth = parent ? parent.document.body.clientWidth : document.body.clientWidth;
var sClientHeight = parent ? parent.document.body.clientHeight : document.body.clientHeight;
var sScrollTop = parent ? parent.document.body.scrollTop : document.body.scrollTop;
document.getElementById(_sId)['style']['display'] = '';
document.getElementById(_sId)['style']['position'] = "absolute";
document.getElementById(_sId)['style']['left'] = (document.body.clientWidth / 2) - (document.getElementById(_sId).offsetWidth / 2);
var sTop = -80 + (sClientHeight / 2 + sScrollTop) - (document.getElementById(_sId).offsetHeight / 2);
document.getElementById(_sId)['style']['top'] = sTop > 0 ? sTop : (sClientHeight / 2 + sScrollTop) - (document.getElementById(_sId).offsetHeight / 2);
}
}

function _error_msg_show(msg, click, icon, title)
{
click = click ? click : ' ';
icon = icon ? icon : '';
title = title ? title : '系统提示信息';

switch (icon)
{
case 'forbid':
icon = 1;
break;

case 'succ':
icon = 2;
break;

case 'smile':
icon = 3;
break;

case 'forget':
icon = 4;
break;

case 'sorry':
icon = 5;
break;

case 'care':
icon = 6;
break;

case '':
icon = 5;
break;
}

dg=new dialog();
dg.init();
dg.set('src', icon);
dg.set('title', title);
dg.event(msg, click, '', click);
}

function _win_error_msg_show(msg, click, icon, top, left, width, height)
{
click = click ? click : ' ';
icon = icon ? icon : '';
title = '系统提示信息';
top = top ? top : 80;
switch (icon)
{
case 'forbid':
icon = 1;
break;

case 'succ':
icon = 2;
break;

case 'smile':
icon = 3;
break;

case 'forget':
icon = 4;
break;

case 'sorry':
icon = 5;
break;

case 'care':
icon = 6;
break;

case '':
icon = 5;
break;
}
dg=new dialog();
dg.init();

dg.set('src', icon);

dg.set('title', title);

if (width)
{
dg.set('width', width);
}
if (height)
{
dg.set('height', height);
}

dg.event(msg, click, '', click);

if (left)
{
document.getElementById('dialogBox')['style']['left'] = left;
document.getElementById('dialogBoxShadow')['style']['left'] = left;
}
if (top)
{
document.getElementById('dialogBox')['style']['top'] = top;
document.getElementById('dialogBoxShadow')['style']['top'] = top;
}

}

function _confirm_msg_show(msg, click_ok, click_no, title)
{
click_ok = click_ok ? click_ok : ' ';
click_no = click_no ? click_no : ' ';
title = title ? title : '系统提示信息';

dg=new dialog();
dg.init();
dg.set('src', 3); // smile
dg.set('title', title);
dg.event(msg, click_ok, click_no, click_no);
}

function _win_confirm_msg_show(msg, click_ok, click_no, top, left, width, height)
{
click_ok = click_ok ? click_ok : ' ';
click_no = click_no ? click_no : ' ';
title = '系统提示信息';
top = top ? top : 80;

dg=new dialog();
dg.init();
dg.set('src', 3); // smile
dg.set('title', title);

if (width)
{
dg.set('width', width);
}
if (height)
{
dg.set('height', height);
}

dg.event(msg, click_ok, click_no, click_no);

if (left)
{
document.getElementById('dialogBox')['style']['left'] = left;
document.getElementById('dialogBoxShadow')['style']['left'] = left;
}
if (top)
{
document.getElementById('dialogBox')['style']['top'] = top;
document.getElementById('dialogBoxShadow')['style']['top'] = top;
}
}

Answer 2

自己写会很麻烦的（尤其是拖动），给你个开源的js库，支持拖动、排序、关闭、下拉div等等很多特效，自己参考它的例子慢慢玩吧，很easy的。

有开源的的库，不用白不用，不要重复发明轮子！

http://script.aculo.us/

如果参考例子还是不会用，可以发信给我 sasunshine@gmail.com

除了能实现以上特效外，它对Ajax也有很好的支持，不过这就是另一个话题了。