js操作table，兑现拖拽，保存顺序思路
日期：2014-05-16 浏览次数：20416 次
js操作table，实现拖拽，保存顺序思路
<%@ page language="java" contentType="text/html; charset=utf-8" pageEncoding="utf-8"%>
<html>
<HEAD>
<META http-equiv="Content-Type" content="text/html; charset=utf-8">
<TITLE>拖动</TITLE>
<STYLE>
td {
width: 20%;
height: 20px;
border-bottom: 1px solid black;
border-right: 1px solid black;
cursor: default;
}
div {
font-size: 13px;
}
th {
height: 20px;
font-size: 12px;
font-weight: normal;
border-bottom: 2px solid black;
background-color: #CCCCCC
}
table {
border: 1px solid black;
font-size: 13px;
}
</STYLE>
<script language="javascript">
/************************************ dragedTableData.js *******************************/
/************************************ dragedTableData.js *******************************/
/*
* created by chengRenYin 2004.4.12
* 可以实现表格内容的内部拖动
* 确保中间过度层的存在，id为指定
*/
/*--------全局变量-----------*/
var dragedTable_x0,dragedTable_y0,dragedTable_x1,dragedTable_y1;
var dragedTable_movable = false;
var dragedTable_preCell = null;
var dragedTable_normalColor = null;
//起始单元格的颜色
var dragedTable_preColor = "lavender";
//目标单元格的颜色
var dragedTable_endColor = "#FFCCFF";
var dragedTable_movedDiv = "dragedTable_movedDiv";
var dragedTable_tableId = "";
/*--------全局变量-----------*/
function DragedTable(tableId)
{
dragedTable_tableId = tableId;
var oTempDiv = document.createElement("div");
oTempDiv.id = dragedTable_movedDiv;
oTempDiv.onselectstart = function(){return false};
oTempDiv.style.cursor = "hand";
oTempDiv.style.position = "absolute";
oTempDiv.style.border = "1px solid black";
oTempDiv.style.backgroundColor = dragedTable_endColor;
oTempDiv.style.display = "none";
document.body.appendChild(oTempDiv);
document.all(tableId).onmousedown = showDiv;
}
//得到控件的绝对位置
function getPos(cell)
{
var pos = new Array();
var t=cell.offsetTop;
var l=cell.offsetLeft;
while(cell=cell.offsetParent)
{
t+=cell.offsetTop;
l+=cell.offsetLeft;
}
pos[0] = t;
pos[1] = l;
return pos;
}
//显示图层
function showDiv()
{
var obj = event.srcElement;
var pos = new Array();
//获取过度图层
var oDiv = document.all(dragedTable_movedDiv);
if(obj.tagName.toLowerCase() == "td")
{
obj.style.cursor = "hand";
pos = getPos(obj);
//计算中间过度层位置，赋值
oDiv.style.width = obj.offsetWidth;
oDiv.style.height = obj.offsetHeight;
oDiv.style.top = pos[0];
oDiv.style.left = pos[1];
oDiv.innerHTML = obj.innerHTML;
oDiv.style.display = "";
dragedTable_x0 = pos[1];
dragedTable_y0 = pos[0];
dragedTable_x1 = event.clientX;
dragedTable_y1 = event.clientY;
//记住原td
dragedTable_normalColor = obj.style.backgroundColor;
obj.style.backgroundColor = dragedTable_preColor;
dragedTable_preCell = obj;
dragedTable_movable = true;
}
}
function dragDiv()
{
if(dragedTable_movable)
{
var oDiv = document.all(dragedTable_movedDiv);
var pos = new Array();
oDiv.style.top = event.clientY - dragedTable_y1 + dragedTable_y0;
oDiv.style.left = event.clientX - dragedTable_x1 + dragedTable_x0;
var oTable = document.all(dragedTable_tableId);
for(var i=0; i<oTable.cells.length; i++)
{
if(oTable.cells[i].tagName.toLowerCase() == "td")
{
pos = getPos(oTable.cells[i]);
if(event.x>pos[1]&&event.x<pos[1]+oTable.cells[i].offsetWidth
&& event.y>pos[0]&& event.y<pos[0]+oTable.cells[i].offsetHeight)
{
if(oTable.cells[i] != dragedTable_preCell)
oTable.cells[i].style.backgroundColor = dragedTable_endColor;
}
else
{
if(oTable.cells[i] != dragedTable_preCell)
oTable.cells[i].style.backgroundColor = dragedTable_normalColor;
}
}
}
}
}
function hideDiv()
{
if(dragedTable_movable)
{
var oTable = document.all(dragedTable_tableId);
var pos = new Array();
if(dragedTable_preCell != null)
{
for(var i=0; i<oTable.cells.length; i++)
{
pos = getPos(oTable.cells[i]);
//计算鼠标位置，是否在某个单元格的范围之内
if(event.x>pos[1]&&event.x<pos[1]+oTable.cells[i].offsetWidth
&& event.y>pos[0]&& event.y<pos[0]+oTable.cells[i].offsetHeight)
{
if(oTable.cells[i].ta
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