js实现table用鼠标改变td的宽度，固定table宽度和高度超过显示点

<!DOCTYPE HTML>

<html>

<head>

    <meta charset="gbk">

    <title>table</title>

    <style>

        .ztable {

            table-layout: fixed;

            font-size: 12px;

            font-family: 微软雅黑;

            border-right: 1px solid #D4D4D4;

            border-bottom: 1px solid #D4D4D4;

        }

            .ztable th {

                background-color: #F0F0F0;

                height: 20px;

                text-overflow: ellipsis;

                white-space: nowrap;

                overflow: hidden;

                border-left: 1px solid #D4D4D4;

                border-top: 1px solid #D4D4D4;

            }

            .ztable td {

                border-left: 1px solid #D4D4D4;

                border-top: 1px solid #D4D4D4;

                height: 20px;

                text-overflow: ellipsis;

                white-space: nowrap;

                overflow: hidden;

            }

    </style>

</head>

<body>

    <table id="tb_1" cellspacing="0" cellpadding="0" width="600" class="ztable">

        <tbody>

            <tr align="center">

                <th style="width: 100px;">用户编号</th>

                <th style="width: 100px;">试用时间</th>

                <th style="width: 100px;">转正时间</th>

                <th style="width: 100px;">性别</th>

                <th>姓名拼音</th>

                <th>生日时间</th>

                <th>民族</th>

                <th>身高</th>

            </tr>

            <tr>

                <td>2000001</td>

                <td>1997-3-13</td>

                <td>1997-3-13</td>

                <td>1</td>

                <td>WZJ</td>

                <td>1965-3-13</td>

                <td>汉</td>

                <td>171</td>

            </tr>

            <tr>

                <td>2000045</td>

                <td>2001-2-15</td>

                <td>2001-3-15</td>

                <td>0</td>

                <td>WY</td>

                <td>1978-8-5</td>

                <td>汉</td>

                <td>162</td>

            </tr>

            <tr>

                <td>2000046</td>

                <td>2001-2-23</td>

                <td>2001-3-23</td>

                <td>0</td>

                <td>LQ</td>

                <td>2001-2-23</td>

                <td>汉</td>

                <td>171</td>

            </tr>

        </tbody>

    </table>

    <script type="text/javascript">

        var tTD; //用来存储当前更改宽度的Table Cell,避免快速移动鼠标的问题

        var table = document.getElementById("tb_1");

        for (j = 0; j < table.rows[0].cells.length; j++) {

            table.rows[0].cells[j].onmousedown = function () {

                //记录单元格

                tTD = this;

                if (event.offsetX > tTD.offsetWidth - 10) {

                    tTD.mouseDown = true;

                    tTD.oldX = event.x;

                    tTD.oldWidth = tTD.offsetWidth;

                }

                //记录Table宽度

                //table = tTD; while (table.tagName != ‘TABLE') table = table.parentElement;

                //tTD.tableWidth = table.offsetWidth;

            };

            table.rows[0].cells[j].onmouseup = function () {

                //结束宽度调整

                if (tTD == undefined) tTD = this;

                tTD.mouseDown = false;

                tTD.style.cursor = 'default';

            };

            table.rows[0].cells[j].onmousemove = function () {

                //更改鼠标样式

                if (event.offsetX > this.offsetWidth - 10)

                    this.style.cursor = 'col-resize';

                else

                    this.style.cursor = 'default';

                //取出暂存的Table Cell

                if (tTD == undefined) tTD = this;

                //调整宽度

                if (tTD.mouseDown != null && tTD.mouseDown == true) {

                    tTD.style.cursor = 'default';

                    if (tTD.oldWidth + (event.x - tTD.oldX) > 0)

                        tTD.width = tTD.oldWidth + (event.x - tTD.oldX);

                    //调整列宽

                    tTD.style.width = tTD.width;

                    tTD.style.cursor = 'col-resize';

                    //调整该列中的每个Cell

                    table = tTD; while (table.tagName != 'TABLE') table = table.parentElement;

                    for (j = 0; j < table.rows.length; j++) {

                        table.rows[j].cells[tTD.cellIndex].width = tTD.width;

                    }

                    //调整整个表

                    //table.width = tTD.tableWidth + (tTD.offsetWidth – tTD.oldWidth);

                    //table.style.width = table.width;

                }

            };

        }

    </script>

</body>

</html>
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js实现table用鼠标改变td的宽度，固定table宽度和高度超过显示点

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